Pub Date : 2022-06-30DOI: 10.52131/jmps.2022.0301.0023
Q. Mahmood, J. Alzahrani, T. Ghrib
The spintronics technology improve the spin functionality which captivated the existence of ferromagnetism. The control of magnetic properties by electrons spin and transport effect have been illustrated in CuCr2X4 (X = S, Se) spinels DFT through Wien2k and BoltztraP codes. The negative formation of energy established the thermodynamic stability of the examined spinels. The half metallic ferromagnetism in the analyzed spinel’s assures density of states. Magnetic moment (Integer value) and the insulating nature with down spin is the reaction of 100% spin polarization. The negative attainment of the condition have presented the prevailing part of electrons spin to create ferromagnetism.
{"title":"Theoretical Investigation of Ferromagnetism and Optical Properties of CuCr2X4 (X = S, Se) Spinels via Ab-initio Calculations","authors":"Q. Mahmood, J. Alzahrani, T. Ghrib","doi":"10.52131/jmps.2022.0301.0023","DOIUrl":"https://doi.org/10.52131/jmps.2022.0301.0023","url":null,"abstract":"The spintronics technology improve the spin functionality which captivated the existence of ferromagnetism. The control of magnetic properties by electrons spin and transport effect have been illustrated in CuCr2X4 (X = S, Se) spinels DFT through Wien2k and BoltztraP codes. The negative formation of energy established the thermodynamic stability of the examined spinels. The half metallic ferromagnetism in the analyzed spinel’s assures density of states. Magnetic moment (Integer value) and the insulating nature with down spin is the reaction of 100% spin polarization. The negative attainment of the condition have presented the prevailing part of electrons spin to create ferromagnetism.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121358254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.52131/jmps.2022.0301.0022
Gulfam Nasar, Uzma Khalil, Muhammad Saleem Khan, Qaisar Nadeem
The goal of the current work is to bring a helpful substance to nanoscience and nanotechnology that might be a "problem solver" for ion storage. Carbon nanotubes/ PVA nanocomposites were prepared in five concentrations in aqueous medium following film formation. The resulting nanocomposites were characterized using “AC Impedance Spectroscopy, Differential Thermal Analysis, Thermal Gravimetric Analysis / (TG/DTA) and Scanning Electron Microscopy (SEM)”. Ionic conductivity of the nanocomposites was determined from impedance spectroscopy. CNT/PVA nanocomposites exhibited lower conductivity as compared with CNT or PVA separately. TG/DTA graphs exhibited a regular pattern, showing an increase in the thermal stability. Morphology of the prepared samples as shown by SEM reveals a favourable polymer-filler morphological arrangement at the interphase, which is suggestive of a favourable compatibility between the polymer and the filler substance.
{"title":"Synthesis and Characterization of CNT/PVA Nanocomposites for Electrical, Thermal and Morphological Properties","authors":"Gulfam Nasar, Uzma Khalil, Muhammad Saleem Khan, Qaisar Nadeem","doi":"10.52131/jmps.2022.0301.0022","DOIUrl":"https://doi.org/10.52131/jmps.2022.0301.0022","url":null,"abstract":"The goal of the current work is to bring a helpful substance to nanoscience and nanotechnology that might be a \"problem solver\" for ion storage. Carbon nanotubes/ PVA nanocomposites were prepared in five concentrations in aqueous medium following film formation. The resulting nanocomposites were characterized using “AC Impedance Spectroscopy, Differential Thermal Analysis, Thermal Gravimetric Analysis / (TG/DTA) and Scanning Electron Microscopy (SEM)”. Ionic conductivity of the nanocomposites was determined from impedance spectroscopy. CNT/PVA nanocomposites exhibited lower conductivity as compared with CNT or PVA separately. TG/DTA graphs exhibited a regular pattern, showing an increase in the thermal stability. Morphology of the prepared samples as shown by SEM reveals a favourable polymer-filler morphological arrangement at the interphase, which is suggestive of a favourable compatibility between the polymer and the filler substance.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.52131/jmps.2022.0301.0024
M. Ahmad, H. M. A. Javed, Asad Ali, Zaheer Ul Hassan, M. Afzaal, Muhammad Arif, S. Hussain
In this research, Fe-doped TiO2 nanoparticles were synthesized by sol-gel technique followed by annealing at 450 oC in a vacuum. The effects of Fe-doping on the morphological, elemental, structural and optical properties of TiO2 nanoparticles have been investigated. XRD analysis was performed to examine the structural properties of synthesized pure TiO2 nanoparticles and Fe-doped TiO2 nanoparticles. Surface analysis was done using Scanning Electron Microscopy. Optical properties were determined using UV/Vis spectroscopy. Morphological analysis revealed that TiO2 nanoparticles have a spherical shape. EDX analysis confirmed the elemental composition of Fe-doped TiO2 nanoparticles. XRD patterns showed that diffraction peaks can be attributed to TiO2 with the anatase phase.
{"title":"Investigation of Morphological, Elemental, Structural, and Optical Properties of Fe-Doped TiO2 Nanoparticles","authors":"M. Ahmad, H. M. A. Javed, Asad Ali, Zaheer Ul Hassan, M. Afzaal, Muhammad Arif, S. Hussain","doi":"10.52131/jmps.2022.0301.0024","DOIUrl":"https://doi.org/10.52131/jmps.2022.0301.0024","url":null,"abstract":"In this research, Fe-doped TiO2 nanoparticles were synthesized by sol-gel technique followed by annealing at 450 oC in a vacuum. The effects of Fe-doping on the morphological, elemental, structural and optical properties of TiO2 nanoparticles have been investigated. XRD analysis was performed to examine the structural properties of synthesized pure TiO2 nanoparticles and Fe-doped TiO2 nanoparticles. Surface analysis was done using Scanning Electron Microscopy. Optical properties were determined using UV/Vis spectroscopy. Morphological analysis revealed that TiO2 nanoparticles have a spherical shape. EDX analysis confirmed the elemental composition of Fe-doped TiO2 nanoparticles. XRD patterns showed that diffraction peaks can be attributed to TiO2 with the anatase phase.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131685928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.52131/jmps.2022.0301.0021
Ruba Akbar, M. S. Shifa, A. Saleem, A. Zaib, Faseeh Ur Raheem, M. Khaliq
This work carried out the study of Co0.5Zn0.5Bi0.4-xPr0.1Fe1.5+xO4 spinel ferrite series (x = 0,0.1, 0.2, 0.3 and 0.4) prepared via micro-emulsion route. Effects on structural, electrical, optical and morphology properties is studied by varying Bi concentration (x = 0,0.1, 0.2, 0.3 and 0.4). The characterization techniques employed included X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible spectroscopy and Fourier transform infrared spectroscopy (FTIR). XRD results confirmed the spinel structure having lattice parameter around 8.39 Å and particle size decreased from 30 nm to 41 nm with increasing Bi concentration. Fourier transform infrared spectroscopy (FTIR) revealed fingerprints of metal oxides band at 408-577 cm-1. Optical properties were studied UV-visible spectroscopy and Eg was found to vary from 2.83 eV to 2.59 eV. The scanning electron microscope (SEM) described the morphology of the samples. We then examine the results and the material's characteristics, as well as the areas in which it can be used.
{"title":"Tuning the Properties of Praseodymium Cobalt-Zinc Ferrites by Substitution of Bismuth","authors":"Ruba Akbar, M. S. Shifa, A. Saleem, A. Zaib, Faseeh Ur Raheem, M. Khaliq","doi":"10.52131/jmps.2022.0301.0021","DOIUrl":"https://doi.org/10.52131/jmps.2022.0301.0021","url":null,"abstract":"This work carried out the study of Co0.5Zn0.5Bi0.4-xPr0.1Fe1.5+xO4 spinel ferrite series (x = 0,0.1, 0.2, 0.3 and 0.4) prepared via micro-emulsion route. Effects on structural, electrical, optical and morphology properties is studied by varying Bi concentration (x = 0,0.1, 0.2, 0.3 and 0.4). The characterization techniques employed included X-ray diffraction (XRD), scanning electron microscope (SEM), UV-visible spectroscopy and Fourier transform infrared spectroscopy (FTIR). XRD results confirmed the spinel structure having lattice parameter around 8.39 Å and particle size decreased from 30 nm to 41 nm with increasing Bi concentration. Fourier transform infrared spectroscopy (FTIR) revealed fingerprints of metal oxides band at 408-577 cm-1. Optical properties were studied UV-visible spectroscopy and Eg was found to vary from 2.83 eV to 2.59 eV. The scanning electron microscope (SEM) described the morphology of the samples. We then examine the results and the material's characteristics, as well as the areas in which it can be used.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116873237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.52131/jmps.2021.0202.0017
J. Alzahrani, S. Al-Qaisi, Q. Mahmood, T. Ghrib
The spinel oxides are one of the prime candidates for their use in thermoelectric and optoelectronic applications. This particular article mainly deals with the thermodynamic and mechanical stabilities of spinel sulfides confirmed by formation energy and Born-mechanical stability criteria. The ductile behavior is achieved through Poisson’s and Pugh's ratios. The indirect band gaps of 1.9 eV, 1.7 eV and direct band gap of 1.3 eV for ZnIn2S4, CdIn2S4 and HgIn2S4 spinel sulfides, respectively, are estimated by employing modified Becke-Johnson (mBJ) potential in the Wien2k computational program. The calculated optical characteristics such as dielectric coefficient, refractive index, absorption, reflection, energy loss coefficient and other related parametric quantities are explored to observe optoelectronic applications from UV to visible energy range as we move from Zn to Hg. Moreover, the ratios of thermal conductivity to electrical conductivity, Seebeck coefficient along with the figure of merits (ZT) are discussed to acknowledge the thermoelectric behavior of all three materials. The high values of ZT 0.84/0.74/0.79 are observed for Zn/Cd/HgIn2S4 spinel sulfides which ensure their prospective use in thermal energy conversion devices, especially in thermoelectric generators.
{"title":"First Principle Study of Structural, Electronic, and Optical Properties of XIn2S4 (X = Zn, Cd, Hg)","authors":"J. Alzahrani, S. Al-Qaisi, Q. Mahmood, T. Ghrib","doi":"10.52131/jmps.2021.0202.0017","DOIUrl":"https://doi.org/10.52131/jmps.2021.0202.0017","url":null,"abstract":"The spinel oxides are one of the prime candidates for their use in thermoelectric and optoelectronic applications. This particular article mainly deals with the thermodynamic and mechanical stabilities of spinel sulfides confirmed by formation energy and Born-mechanical stability criteria. The ductile behavior is achieved through Poisson’s and Pugh's ratios. The indirect band gaps of 1.9 eV, 1.7 eV and direct band gap of 1.3 eV for ZnIn2S4, CdIn2S4 and HgIn2S4 spinel sulfides, respectively, are estimated by employing modified Becke-Johnson (mBJ) potential in the Wien2k computational program. The calculated optical characteristics such as dielectric coefficient, refractive index, absorption, reflection, energy loss coefficient and other related parametric quantities are explored to observe optoelectronic applications from UV to visible energy range as we move from Zn to Hg. Moreover, the ratios of thermal conductivity to electrical conductivity, Seebeck coefficient along with the figure of merits (ZT) are discussed to acknowledge the thermoelectric behavior of all three materials. The high values of ZT 0.84/0.74/0.79 are observed for Zn/Cd/HgIn2S4 spinel sulfides which ensure their prospective use in thermal energy conversion devices, especially in thermoelectric generators.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123813709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.52131/jmps.2021.0202.0016
A. Hameed, M. Khaliq
The impact of Tb-Cr substitution in cobalt-based ferrites having composition Co1-xTbxFe2-yCryO4 (x=0.0-0.1, y=0.0-0.5) prepared by solid state reaction method on structural, magnetic and dielectric parameters was explored. Structural analysis was carried out by X-ray diffraction technique. A variation in lattice parameter (a) was observed as a function of doping. The lattice constant ‘a’ increases from 8.37 Å to 8.39 Å, whereas crystallite size (D) decreases from 44 nm to 28 nm with Tb-Cr substitution. Unit cell volume was found in the range 586.8 Å3 - 590.6 Å3. X-ray density, bulk density as well as porosity were also affected with the inclusion of Tb-Cr ions. Saturation magnetization and remanence were observed to decrease from 62 emu/g to 51 emu/g and 13.38 emu/g to 8.29 emu/g, respectively with the addition of Tb-Cr contents. The incorporation of Tb-Cr cations caused the decrease in dielectric parameters like dielectric constant as well as dielectric loss.
{"title":"Role of Tb-Cr Substitution on the Structural and Magnetic Properties of Cobalt Ferrites","authors":"A. Hameed, M. Khaliq","doi":"10.52131/jmps.2021.0202.0016","DOIUrl":"https://doi.org/10.52131/jmps.2021.0202.0016","url":null,"abstract":"The impact of Tb-Cr substitution in cobalt-based ferrites having composition Co1-xTbxFe2-yCryO4 (x=0.0-0.1, y=0.0-0.5) prepared by solid state reaction method on structural, magnetic and dielectric parameters was explored. Structural analysis was carried out by X-ray diffraction technique. A variation in lattice parameter (a) was observed as a function of doping. The lattice constant ‘a’ increases from 8.37 Å to 8.39 Å, whereas crystallite size (D) decreases from 44 nm to 28 nm with Tb-Cr substitution. Unit cell volume was found in the range 586.8 Å3 - 590.6 Å3. X-ray density, bulk density as well as porosity were also affected with the inclusion of Tb-Cr ions. Saturation magnetization and remanence were observed to decrease from 62 emu/g to 51 emu/g and 13.38 emu/g to 8.29 emu/g, respectively with the addition of Tb-Cr contents. The incorporation of Tb-Cr cations caused the decrease in dielectric parameters like dielectric constant as well as dielectric loss.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121690618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.52131/jmps.2021.0202.0018
Naveed Jafar, G. Murtaza, Ghazanfar Nazir, Adeela Rehman
The current research focuses on the fabrication and characterization of barium tin oxide antiperovskite oxide Ba3SnO. BaO and Sn2O were used as precursors to synthesise the Ba3SnO by using solid state ceramic method. Co ion has been implanted using Pelletron Accelerator with different doses 1013, 5×1013, 1014 ions/cm2. The study includes the investigations of penetration depth range of Co ions in the target material, structural, surface morphology, verification of elemental composition, and band gap energy by using the characterization techniques SRIM, XRD, SEM, EDX, FTIR, and UV-Vis spectroscopy respectively. Phase identification of desired material assures by XRD. SEM results showed that the rough and sharp rod shape varies into a very smooth and fine granular shape by ion implantation. EDX plots confirm the existence of basic elements like Ba, Sn, Co and O. The FTIR identify the unknown material and components which confirmed the formation of B3SnO and incorporation of Co ions. UV-Vis spectroscopy results revealed that increasing the implanted ion dose causes a slight increase in band gap energy from 2.61 to 2.88 of this material. The obtained results allow us to conclude that the prepared sample contains a fine structure with no impurity. Therefore, we can say that this process is ideal for obtaining fine structured Ba3SnO.
{"title":"Investigation to Understand the Co Ions Inclusion in Ba3SnO Antiperovskites Structure","authors":"Naveed Jafar, G. Murtaza, Ghazanfar Nazir, Adeela Rehman","doi":"10.52131/jmps.2021.0202.0018","DOIUrl":"https://doi.org/10.52131/jmps.2021.0202.0018","url":null,"abstract":"The current research focuses on the fabrication and characterization of barium tin oxide antiperovskite oxide Ba3SnO. BaO and Sn2O were used as precursors to synthesise the Ba3SnO by using solid state ceramic method. Co ion has been implanted using Pelletron Accelerator with different doses 1013, 5×1013, 1014 ions/cm2. The study includes the investigations of penetration depth range of Co ions in the target material, structural, surface morphology, verification of elemental composition, and band gap energy by using the characterization techniques SRIM, XRD, SEM, EDX, FTIR, and UV-Vis spectroscopy respectively. Phase identification of desired material assures by XRD. SEM results showed that the rough and sharp rod shape varies into a very smooth and fine granular shape by ion implantation. EDX plots confirm the existence of basic elements like Ba, Sn, Co and O. The FTIR identify the unknown material and components which confirmed the formation of B3SnO and incorporation of Co ions. UV-Vis spectroscopy results revealed that increasing the implanted ion dose causes a slight increase in band gap energy from 2.61 to 2.88 of this material. The obtained results allow us to conclude that the prepared sample contains a fine structure with no impurity. Therefore, we can say that this process is ideal for obtaining fine structured Ba3SnO.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.52131/jmps.2021.0202.0019
R.M.A. Khalil, F. Hussain, Niaz Ahmad Niaz
The radiation damage in Silicon-Carbide and its result are presented in this research. The Density Functional Tight Binding (DFTB) approach is used to perform molecular dynamics simulations to implement the DFTB+ code (Elstner et al., 1998). This methodology shows the making and breaking of chemical bonding as well as describes the realistic total energy for the larger systems. Repulsive potentials have been developed to prevent the atoms to stay close to each other during the model of high energy collisions also correctly describe the configurations during the atomic separation within the typical range. The extent and nature of damages are characterized within the collision event up to 10KeV. The band structure of SiC has been studied using minimal basis (sp) as applied in DFTB+. The value of band gap shows that cubic SiC is a large band gap semiconductor material. This value is comparable with the given in literature. Density of states is also calculated by using the tight binding approach. The peaks of spectrum have been compared with the experimental values found in literature.
{"title":"Studies of Molecular Dynamics and Electronic Structure in Cubic-SiC by Using Density Functional Tight Binding Approach","authors":"R.M.A. Khalil, F. Hussain, Niaz Ahmad Niaz","doi":"10.52131/jmps.2021.0202.0019","DOIUrl":"https://doi.org/10.52131/jmps.2021.0202.0019","url":null,"abstract":"The radiation damage in Silicon-Carbide and its result are presented in this research. The Density Functional Tight Binding (DFTB) approach is used to perform molecular dynamics simulations to implement the DFTB+ code (Elstner et al., 1998). This methodology shows the making and breaking of chemical bonding as well as describes the realistic total energy for the larger systems. Repulsive potentials have been developed to prevent the atoms to stay close to each other during the model of high energy collisions also correctly describe the configurations during the atomic separation within the typical range. The extent and nature of damages are characterized within the collision event up to 10KeV. The band structure of SiC has been studied using minimal basis (sp) as applied in DFTB+. The value of band gap shows that cubic SiC is a large band gap semiconductor material. This value is comparable with the given in literature. Density of states is also calculated by using the tight binding approach. The peaks of spectrum have been compared with the experimental values found in literature.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121108401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.52131/jmps.2021.0202.0020
Z. A. Gilani, M. Tariq, H. U. H. K. Khan Asghar, N. Khan
Neodymium (Nd3+) doped Mn-Ni based spinel ferrite with composition of Mn0.5Ni0.5NdxFe2-XO4 (x= 0.00, 0.5, 0.10, 0.15 and 0.20), the nanoparticle was essentially formulated by sol-gel self-ignition method. The impact of Nd3+ doping on structural and electrical properties has been extensively studied. XRD verified the FCC spinel arrangement of the synthesized samples. The Debye Scherer formula is used to determine the crystalline size, which was observed in the nano scale ranging between 6 and 10 nm. XRD was used to validate the composition, crystalline size and determining different structural parameters of sample. It is noted that the lattice parameter changes when the Nd3+ doping concentration was enhanced because smaller radius of Fe3+ ions is replaced by large ionic radius of Nd ions. When Nd concentration raises X-Ray density and dislocation density also rises. FTIR verify the compositions of spinel phase and also examine the absorption bands. There were two major frequency bands one was high frequency band ?1 with range of about 500cm-1. Second was low frequency band ?2 with range of about almost 400cm-1. Dielectric performed in the frequency range of 1 MHz to 3 GHz. It was used to determine the effect of Nd3+ doping on various parameters. Dielectric investigations showed decline in dielectric constant. Impedance analysis revealed reducing values with frequency, due to the increase in material conductivity. Real and imaginary modulus study showed the influence of grain boundaries at low frequencies. These properties played significant role in high frequency applications and semiconductor devices.
{"title":"Experimental Study of Neodymium (Nd3+) Doped Mn-Ni based Spinel Ferrite (Mn0.5Ni0.5NdxFe2-xO4) Nanoparticle using Sol-Gel Method","authors":"Z. A. Gilani, M. Tariq, H. U. H. K. Khan Asghar, N. Khan","doi":"10.52131/jmps.2021.0202.0020","DOIUrl":"https://doi.org/10.52131/jmps.2021.0202.0020","url":null,"abstract":"Neodymium (Nd3+) doped Mn-Ni based spinel ferrite with composition of Mn0.5Ni0.5NdxFe2-XO4 (x= 0.00, 0.5, 0.10, 0.15 and 0.20), the nanoparticle was essentially formulated by sol-gel self-ignition method. The impact of Nd3+ doping on structural and electrical properties has been extensively studied. XRD verified the FCC spinel arrangement of the synthesized samples. The Debye Scherer formula is used to determine the crystalline size, which was observed in the nano scale ranging between 6 and 10 nm. XRD was used to validate the composition, crystalline size and determining different structural parameters of sample. It is noted that the lattice parameter changes when the Nd3+ doping concentration was enhanced because smaller radius of Fe3+ ions is replaced by large ionic radius of Nd ions. When Nd concentration raises X-Ray density and dislocation density also rises. FTIR verify the compositions of spinel phase and also examine the absorption bands. There were two major frequency bands one was high frequency band ?1 with range of about 500cm-1. Second was low frequency band ?2 with range of about almost 400cm-1. Dielectric performed in the frequency range of 1 MHz to 3 GHz. It was used to determine the effect of Nd3+ doping on various parameters. Dielectric investigations showed decline in dielectric constant. Impedance analysis revealed reducing values with frequency, due to the increase in material conductivity. Real and imaginary modulus study showed the influence of grain boundaries at low frequencies. These properties played significant role in high frequency applications and semiconductor devices.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130000024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-30DOI: 10.52131/jmps.2021.0201.0012
Alina Manzoor, M. Abubakar, A. Afzal, M. Arshad, M. N. Rasul
The effect of cadmium ions on the structural, spectral, and dielectric properties of Pr doped Ni0.4Co0.6-xCdxFe1.95Pr0.05O4 ferrites synthesized by the self-ignited sol-gel process is investigated in the present work. The addition of cadmium ions in place of cobalt ions resulted in an increase in the lattice constant. X-ray diffraction experiment revealed the single-phase spinel structure. The obtained average crystallite size is ranging from 20 - 30 nm. By increasing the substitution of cadmium ions, the dielectric constant, dielectric loss (tan ?) and impedance are noted to increase. SEM study found the spherical grain morphology with some degree of agglomeration. The existence of pores, the sintering process, and the magnetic activity of the particles may be responsible for nanosized particles with a homogeneous particle size distribution. Raman spectra revealed a slight shifting in Raman modes with cadmium addition which may be attributed to the strain produced due to the presence of larger cadmium ions at the Fe3+ site.
{"title":"Investigation of Structural, Spectral, and Dielectric Properties of CdSubstituted NiCoPr Nano Ferrites","authors":"Alina Manzoor, M. Abubakar, A. Afzal, M. Arshad, M. N. Rasul","doi":"10.52131/jmps.2021.0201.0012","DOIUrl":"https://doi.org/10.52131/jmps.2021.0201.0012","url":null,"abstract":"The effect of cadmium ions on the structural, spectral, and dielectric properties of Pr doped Ni0.4Co0.6-xCdxFe1.95Pr0.05O4 ferrites synthesized by the self-ignited sol-gel process is investigated in the present work. The addition of cadmium ions in place of cobalt ions resulted in an increase in the lattice constant. X-ray diffraction experiment revealed the single-phase spinel structure. The obtained average crystallite size is ranging from 20 - 30 nm. By increasing the substitution of cadmium ions, the dielectric constant, dielectric loss (tan ?) and impedance are noted to increase. SEM study found the spherical grain morphology with some degree of agglomeration. The existence of pores, the sintering process, and the magnetic activity of the particles may be responsible for nanosized particles with a homogeneous particle size distribution. Raman spectra revealed a slight shifting in Raman modes with cadmium addition which may be attributed to the strain produced due to the presence of larger cadmium ions at the Fe3+ site.","PeriodicalId":293021,"journal":{"name":"Journal of Materials and Physical Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126070281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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