Abstract: Polyaniline/ titanium dioxide composite (PANI/TiO2) was synthesized by in-situ chemical polymerization in an ice bath medium for polyaniline with different percentages of TiO2 nanoparticles (3, 6, and 9) wt. %. UV-Vis spectrophotometer, Fourier Transforms Infrared (FTIR) spectrometer, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to characterize the materials. The XRD patterns showed polycrystalline structure for PURE PANI and PANI/TiO2 composite of different TiO2 ratios. The FT-IR investigated the presence of polyaniline. The analysis of UV-Vis spectra revealed that the energy gap for PANI/TiO2 decreased with increasing the ratios of TiO2 nanoparticles. Keywords: Conducting polymer, Polyaniline (PANI), Titanium dioxide (TiO2), Structure characterization, Optical properties, PANI composite.
{"title":"Optical and Structural Characterization of Polyaniline/Titanium Dioxide Nano Composites","authors":"","doi":"10.47011/16.2.4","DOIUrl":"https://doi.org/10.47011/16.2.4","url":null,"abstract":"Abstract: Polyaniline/ titanium dioxide composite (PANI/TiO2) was synthesized by in-situ chemical polymerization in an ice bath medium for polyaniline with different percentages of TiO2 nanoparticles (3, 6, and 9) wt. %. UV-Vis spectrophotometer, Fourier Transforms Infrared (FTIR) spectrometer, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM) were used to characterize the materials. The XRD patterns showed polycrystalline structure for PURE PANI and PANI/TiO2 composite of different TiO2 ratios. The FT-IR investigated the presence of polyaniline. The analysis of UV-Vis spectra revealed that the energy gap for PANI/TiO2 decreased with increasing the ratios of TiO2 nanoparticles. Keywords: Conducting polymer, Polyaniline (PANI), Titanium dioxide (TiO2), Structure characterization, Optical properties, PANI composite.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136365804","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}
Abstract: In this paper, we investigate the LRS Bianchi Type-II universe filled with pressureless cold dark matter and non-interacting new holographic dark energy in the framework of general relativity. To obtain the deterministic solution of Einstein’s field equations, we assume the scalar of expansion to be proportional to the eigenvalue of the shear tensor. The expressions for some parameters of cosmological importance are obtained and physical and geometrical properties of the model are discussed. The correspondence between the new holographic dark energy and quintessence scalar field model is also established by comparing their equations of state and densities. Our results are consistent with the recent cosmological observations. Keywords: Bianchi type-II, Holographic principle, Dark energy, Quintessence.
{"title":"LRS Bianchi Type-II Cosmological Model with New Holographic Dark Energy in General Relativity with Quintessence","authors":"","doi":"10.47011/16.2.1","DOIUrl":"https://doi.org/10.47011/16.2.1","url":null,"abstract":"Abstract: In this paper, we investigate the LRS Bianchi Type-II universe filled with pressureless cold dark matter and non-interacting new holographic dark energy in the framework of general relativity. To obtain the deterministic solution of Einstein’s field equations, we assume the scalar of expansion to be proportional to the eigenvalue of the shear tensor. The expressions for some parameters of cosmological importance are obtained and physical and geometrical properties of the model are discussed. The correspondence between the new holographic dark energy and quintessence scalar field model is also established by comparing their equations of state and densities. Our results are consistent with the recent cosmological observations. Keywords: Bianchi type-II, Holographic principle, Dark energy, Quintessence.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136366125","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}
Abstract: The propagation and overtaking collision of dust acoustic multi-soliton in a dusty plasma consisting of kappa-distributed electrons, Boltzmann-distributed ions, and negatively charged dust grains has been investigated. In the Theoretical study, we use the reductive perturbation method to derive the Korteweg–De Vries (KdV) equation. Using the Hirota bilinear method, we have found four-soliton and five-soliton solutions of the KdV equation. It is observed that the dust charge variation coefficients are significantly affected by the spectral indices of the electrons. We discovered that plasma systems with variable-charged dust grains support the formation of solitons with greater amplitude. Our results help understanding the nonlinear phenomena that form in the magnetospheres of Saturn and Comet Halley as well as in interstellar dusty plasma. Keywords: Dusty plasma, Overtaking collision, Dust charge variation, Korteweg–De Vries (KdV) equation, Hirota bilinear method.
{"title":"Effect of Variable Dust Charge on Overtaking Collision of Multi-Solitons in Dusty Plasma","authors":"","doi":"10.47011/16.2.5","DOIUrl":"https://doi.org/10.47011/16.2.5","url":null,"abstract":"Abstract: The propagation and overtaking collision of dust acoustic multi-soliton in a dusty plasma consisting of kappa-distributed electrons, Boltzmann-distributed ions, and negatively charged dust grains has been investigated. In the Theoretical study, we use the reductive perturbation method to derive the Korteweg–De Vries (KdV) equation. Using the Hirota bilinear method, we have found four-soliton and five-soliton solutions of the KdV equation. It is observed that the dust charge variation coefficients are significantly affected by the spectral indices of the electrons. We discovered that plasma systems with variable-charged dust grains support the formation of solitons with greater amplitude. Our results help understanding the nonlinear phenomena that form in the magnetospheres of Saturn and Comet Halley as well as in interstellar dusty plasma. Keywords: Dusty plasma, Overtaking collision, Dust charge variation, Korteweg–De Vries (KdV) equation, Hirota bilinear method.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136366126","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}
Abstract: In this study, the solution of the deformed Klein-Gordon and deformed Schrödinger equations (DKGE and DSE for short) for the modified Eckart potential plus a new modified deformed Hylleraas potential (MEPNMDHP, for short) with the improved approximation to deal with the centrifugal term is investigated using Bopp’s shift and standard perturbation theory methods in the symmetries of relativistic noncommutative quantum mechanics RNCQM and nonrelativistic noncommutative quantum mechanics NRNCQM. To the best of our knowledge, this problem is examined in literature in usual RQM and NRQM. The new potential suggested describes some selected diatomic molecules such as the homogeneous diatomic molecules (N2 and H2) and heterogeneous diatomic molecules (HCl, HBr, SO, NO, and HI). The new values that we get appeared sensitive to the quantum numbers (j,s,m) in addition to the usual states’ numbers (n,l), the potential depths of the potential (V_0,V_1,V_2), the range of the potential α and noncommutativity parameters (Θ,σ,χ). We have highlighted three physical phenomena that automatically generate a result of the topological properties of non-commutativity. The first physical phenomenon is the perturbative spin-orbit coupling, the second is the magnetic induction, and the third is the rotational proper phenomenon. In both relativistic and nonrelativistic problems, we show that the corrections on the spectrum energy are smaller than the main energy in the ordinary cases of quantum field theory and quantum mechanics. In the new symmetries of NCQM, it is not possible to get the exact analytical solutions for l=0 and l≠0, so the approximate solutions are available. We have observed that the DKGE under the MEPNMDHP has a physical behavior similar to the Duffin-Kemmer equation that can describe the dynamic state of a particle with spin-1 in the symmetries of RNCQM. Four special cases; i.e., l wave is investigated in the context of DKGE and Schrödinger theories. The new relativistic and nonrelativistic energy for some potentials, such as only modified Eckart potential and only new modified Hylleraas potential, have also been obtained by varying some potential parameters. Keywords: Klein-Gordon equation, Schrödinger equation, Eckart potentials, Modified Hylleraas potential, Diatomic molecules, Noncommutative geometry, Star products, Bopp's shift method. PACs: 03.65. Ge; 03.65. Pm; 03.65.−w, 32.30 – r, 02.30. Gp.
{"title":"New Bound State Solutions of 3-Dimensional Modified Eckart Potential Plus a New Modified Deformed Hylleraas Potential in RNCQM and NRNCQM Symmetries","authors":"","doi":"10.47011/16.1.4","DOIUrl":"https://doi.org/10.47011/16.1.4","url":null,"abstract":"Abstract: In this study, the solution of the deformed Klein-Gordon and deformed Schrödinger equations (DKGE and DSE for short) for the modified Eckart potential plus a new modified deformed Hylleraas potential (MEPNMDHP, for short) with the improved approximation to deal with the centrifugal term is investigated using Bopp’s shift and standard perturbation theory methods in the symmetries of relativistic noncommutative quantum mechanics RNCQM and nonrelativistic noncommutative quantum mechanics NRNCQM. To the best of our knowledge, this problem is examined in literature in usual RQM and NRQM. The new potential suggested describes some selected diatomic molecules such as the homogeneous diatomic molecules (N2 and H2) and heterogeneous diatomic molecules (HCl, HBr, SO, NO, and HI). The new values that we get appeared sensitive to the quantum numbers (j,s,m) in addition to the usual states’ numbers (n,l), the potential depths of the potential (V_0,V_1,V_2), the range of the potential α and noncommutativity parameters (Θ,σ,χ). We have highlighted three physical phenomena that automatically generate a result of the topological properties of non-commutativity. The first physical phenomenon is the perturbative spin-orbit coupling, the second is the magnetic induction, and the third is the rotational proper phenomenon. In both relativistic and nonrelativistic problems, we show that the corrections on the spectrum energy are smaller than the main energy in the ordinary cases of quantum field theory and quantum mechanics. In the new symmetries of NCQM, it is not possible to get the exact analytical solutions for l=0 and l≠0, so the approximate solutions are available. We have observed that the DKGE under the MEPNMDHP has a physical behavior similar to the Duffin-Kemmer equation that can describe the dynamic state of a particle with spin-1 in the symmetries of RNCQM. Four special cases; i.e., l wave is investigated in the context of DKGE and Schrödinger theories. The new relativistic and nonrelativistic energy for some potentials, such as only modified Eckart potential and only new modified Hylleraas potential, have also been obtained by varying some potential parameters.\u0000Keywords: Klein-Gordon equation, Schrödinger equation, Eckart potentials, Modified Hylleraas potential, Diatomic molecules, Noncommutative geometry, Star products, Bopp's shift method.\u0000PACs: 03.65. Ge; 03.65. Pm; 03.65.−w, 32.30 – r, 02.30. Gp.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48073094","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}
Abstract: With their nano-engineered feature, Photonic Crystals (PhCs) allow the best control of the propagation and absorption of light in an increased way. In our work, we applied the Rigorous Coupled Wave Analysis (RCWA) method to calculate the diffraction efficiency, field distribution, for a specific incidence angle and absorption energy in a periodic structures using unpatterned, 1DPhC, half circle and triangular grating structures with both a-Si:H, a-SiGe:H thin film semiconductor materials with different gratings of PhCs to improve optical absorption, taking into account the J-V solar cell characteristics. According to our simulation, the ideal result was in the case of triangular grating with a-SiGe:H semiconductor material so for the presence of Germanium, which enhances light absorption by reducing the band gap energy. The optical light absorption was more than 85.7% by increase the lattice parameter from 0.3µm to 0.5µm. Moreover, we found a solar cell efficiency enhancement of 16.6%, with a total improvement of 7.74%; as compared with unpatterned grating. Concerning the incidence angle effect, the better one is ranged between 50° and 70° with a peak absorption ratio of 99%. Keywords: Photonic crystals, RCWA, Incidence angle, Triangular grating, Solar cell.
{"title":"Morphological Design of the Photonic Crystals Influence on Improving the Optoelectronic Properties of a-SiGe:H Thin Film Solar Cell","authors":"","doi":"10.47011/16.1.11","DOIUrl":"https://doi.org/10.47011/16.1.11","url":null,"abstract":"Abstract: With their nano-engineered feature, Photonic Crystals (PhCs) allow the best control of the propagation and absorption of light in an increased way. In our work, we applied the Rigorous Coupled Wave Analysis (RCWA) method to calculate the diffraction efficiency, field distribution, for a specific incidence angle and absorption energy in a periodic structures using unpatterned, 1DPhC, half circle and triangular grating structures with both a-Si:H, a-SiGe:H thin film semiconductor materials with different gratings of PhCs to improve optical absorption, taking into account the J-V solar cell characteristics. According to our simulation, the ideal result was in the case of triangular grating with a-SiGe:H semiconductor material so for the presence of Germanium, which enhances light absorption by reducing the band gap energy. The optical light absorption was more than 85.7% by increase the lattice parameter from 0.3µm to 0.5µm. Moreover, we found a solar cell efficiency enhancement of 16.6%, with a total improvement of 7.74%; as compared with unpatterned grating. Concerning the incidence angle effect, the better one is ranged between 50° and 70° with a peak absorption ratio of 99%.\u0000Keywords: Photonic crystals, RCWA, Incidence angle, Triangular grating, Solar cell.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42255527","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}
Abstract: In this paper, we have constructed a Bianchi type V cosmological model, in the presence of bulk viscous fluid and within the framework of f(R,T) theory of gravity with an appropriate choice of the functional f(R,T)in the form f(R,T )=R+2f(T), where R and T are respectively Ricci scalar and trace of energy momentum tensor. In order to obtain a deterministic solution, we have considered two general forms of hyperbolic scale factors. The different forms of scale factors considered here produce time-varying deceleration parameters in all the cases that simulate the cosmic transition. The state finder diagnostic pair is found to be in the acceptable range. The physical parameters are constrained from different representative values to build up a realistic cosmological model aligned with the observational behaviour. Keywords: Bianchi type V, Dark energy, f(R,T) gravity, Variable deceleration parameter.
{"title":"Behaviour of Bianchi Type-V Dark Energy Model in f(R,T) Gravity with a Specific Form of Hubble Parameter","authors":"","doi":"10.47011/16.1.5","DOIUrl":"https://doi.org/10.47011/16.1.5","url":null,"abstract":"Abstract: In this paper, we have constructed a Bianchi type V cosmological model, in the presence of bulk viscous fluid and within the framework of f(R,T) theory of gravity with an appropriate choice of the functional f(R,T)in the form f(R,T )=R+2f(T), where R and T are respectively Ricci scalar and trace of energy momentum tensor. In order to obtain a deterministic solution, we have considered two general forms of hyperbolic scale factors. The different forms of scale factors considered here produce time-varying deceleration parameters in all the cases that simulate the cosmic transition. The state finder diagnostic pair is found to be in the acceptable range. The physical parameters are constrained from different representative values to build up a realistic cosmological model aligned with the observational behaviour.\u0000Keywords: Bianchi type V, Dark energy, f(R,T) gravity, Variable deceleration parameter.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44596854","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}
Abstract: The Jordan Research and Training Reactor (JRTR) is a 5-MWth, open-pool type, light-water moderated and cooled reactor with a heavy-water reflector system. The core consists of standard Material Testing Reactor (MTR), the plate type of fuel assemblies with low enriched fuel of 19.75% U-235 enrichment. One of the most important purposes of JRTR is producing several radioisotopes e.g. (99Mo/99mTc, 131I and 192Ir isotopes) by using the neutron activation technology. A new computational model has been developed for different low enrichment fuels (Thorium and Uranium) in the JRTR by using the Serpent Monte Carlo code. The purpose of this paper is to validate Th-U233 fuel by comparison of the calculation results of important neutronics parameters, like keff, flux distribution, kinetics parameters, power peaking factors, heat decay and activity of spent fuel. Keywords: U3Si2, Th3Si2, JRTR, Light-water Reactors (LWRs), Extended cycle lengths.
{"title":"Neutron-Physical and Radiation Characteristics of Different Low Enrichment Fuels (Thorium and Uranium) in a Proposed JRTR Research Reactor","authors":"","doi":"10.47011/16.1.9","DOIUrl":"https://doi.org/10.47011/16.1.9","url":null,"abstract":"Abstract: The Jordan Research and Training Reactor (JRTR) is a 5-MWth, open-pool type, light-water moderated and cooled reactor with a heavy-water reflector system. The core consists of standard Material Testing Reactor (MTR), the plate type of fuel assemblies with low enriched fuel of 19.75% U-235 enrichment. One of the most important purposes of JRTR is producing several radioisotopes e.g. (99Mo/99mTc, 131I and 192Ir isotopes) by using the neutron activation technology. A new computational model has been developed for different low enrichment fuels (Thorium and Uranium) in the JRTR by using the Serpent Monte Carlo code. The purpose of this paper is to validate Th-U233 fuel by comparison of the calculation results of important neutronics parameters, like keff, flux distribution, kinetics parameters, power peaking factors, heat decay and activity of spent fuel.\u0000Keywords: U3Si2, Th3Si2, JRTR, Light-water Reactors (LWRs), Extended cycle lengths.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46978409","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}
Abstract: In this study, cadmium stannic oxide (Cd-Sn-O) (CSO) thin films of different Sn mole fractions (Sn/(Sn+Cd)) were prepared by spray pyrolysis. X-ray diffraction measurements showed polycrystalline structures of Cd2SnO4 phase and minor phases of CdSnO3 and SnO2 at 0.1 Sn ratio. Increasing the Sn concentration caused reducing the polycrystalline structure phase of Cd2SnO4 and increasing CdSnO3 being the dominant phase at 0.3 Sn mole fraction. The polycrystalline structure phase of SnO2 appeared as dominant at 0.5 Sn mole fraction. Field Emission Scanning Electron Microscopy (FE-SEM) was employed to investigate CSO that was prepared at different Sn mole fractions. The FE-SEM results of CSO thin films at 0.1 mole fraction showed nanorods which are 266 nm in diameter and the dimensions of the observed nanorods showed maximum at 0.2 Sn mole fraction. The sample prepared with 0.3 Sn mole fraction appeared as two particle structures; small spherical structures with a diameter of 250 nm attached to each other covered by radially branched laminate structures on the film surface. These shapes were about 470 nm wide and 3.5 μm long. In the sample type, at 0.4 Sn mole fraction, the lamellar structure emerged to curl and covered a larger area of the film surface. At the ratio of 0.5, the lamellar structure covered the entire surface of the film. Keywords: Cadmium stannic oxide, Metal oxide, (Cd, Sn) oxide composite, Spray pyrolysis.
{"title":"Structural and Surface Morphology of Multi-phase Cadmium Stannic Oxide Thin Films Prepared by Spray Pyrolysis Technique","authors":"","doi":"10.47011/16.1.10","DOIUrl":"https://doi.org/10.47011/16.1.10","url":null,"abstract":"Abstract: In this study, cadmium stannic oxide (Cd-Sn-O) (CSO) thin films of different Sn mole fractions (Sn/(Sn+Cd)) were prepared by spray pyrolysis. X-ray diffraction measurements showed polycrystalline structures of Cd2SnO4 phase and minor phases of CdSnO3 and SnO2 at 0.1 Sn ratio. Increasing the Sn concentration caused reducing the polycrystalline structure phase of Cd2SnO4 and increasing CdSnO3 being the dominant phase at 0.3 Sn mole fraction. The polycrystalline structure phase of SnO2 appeared as dominant at 0.5 Sn mole fraction. Field Emission Scanning Electron Microscopy (FE-SEM) was employed to investigate CSO that was prepared at different Sn mole fractions. The FE-SEM results of CSO thin films at 0.1 mole fraction showed nanorods which are 266 nm in diameter and the dimensions of the observed nanorods showed maximum at 0.2 Sn mole fraction. The sample prepared with 0.3 Sn mole fraction appeared as two particle structures; small spherical structures with a diameter of 250 nm attached to each other covered by radially branched laminate structures on the film surface. These shapes were about 470 nm wide and 3.5 μm long. In the sample type, at 0.4 Sn mole fraction, the lamellar structure emerged to curl and covered a larger area of the film surface. At the ratio of 0.5, the lamellar structure covered the entire surface of the film.\u0000Keywords: Cadmium stannic oxide, Metal oxide, (Cd, Sn) oxide composite, Spray pyrolysis.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43689357","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}
Abstract: The present paper addresses the activation energy and magnetic susceptibility in samarium sulfide (SmS) under the influence of pressure at constant temperature. The samarium sulfide has shown the pressure-induced NaCl (B1) to CsCl (B2) structural phase transition. In this transition, 4f energy level (valence band) of samarium sulfide has shifted towards the 5d conduction band within the band gap. The calculated values of magnetic susceptibility, activation energy and energy-band gap are in close agreement with the experimental results. Keywords: Activation energy, Magnetic susceptibility, Samarium sulfide.
{"title":"Activation Energy and Magnetic Susceptibility of Samarium Sulfide (SmS) under the Effect of Pressure at Constant Temperature","authors":"","doi":"10.47011/16.1.3","DOIUrl":"https://doi.org/10.47011/16.1.3","url":null,"abstract":"Abstract: The present paper addresses the activation energy and magnetic susceptibility in samarium sulfide (SmS) under the influence of pressure at constant temperature. The samarium sulfide has shown the pressure-induced NaCl (B1) to CsCl (B2) structural phase transition. In this transition, 4f energy level (valence band) of samarium sulfide has shifted towards the 5d conduction band within the band gap. The calculated values of magnetic susceptibility, activation energy and energy-band gap are in close agreement with the experimental results.\u0000Keywords: Activation energy, Magnetic susceptibility, Samarium sulfide.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48150589","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}
Abstract: The stability, structural, electronic and magnetic properties of the doped Heusler compounds Co2MnGa1−xAlx with (x= 0, 0.25, 0.50, 0.75 and 1) were studied theoretically by using first-principles density functional theory within the generalized gradient approximation (GGA) scheme. The magnetic state is found to be energetically more favorable than the non-magnetic one. The calculated results reveal that with increasing Al concentration, the lattice parameter slightly decreases. Furthermore, the calculated densities of states for Co2MnGa, Co2MnAl and Co2MnGa1-xAlx (x = 0.25, 0.50 and 0.75) show a half-metallic behavior. Keywords: Heusler, Half metallic, Co-based heusler, Magnetic moment.
{"title":"Prediction of the Half-metallic Properties of Co2MnGa1-xAlx Heusler Alloys","authors":"","doi":"10.47011/16.1.7","DOIUrl":"https://doi.org/10.47011/16.1.7","url":null,"abstract":"Abstract: The stability, structural, electronic and magnetic properties of the doped Heusler compounds Co2MnGa1−xAlx with (x= 0, 0.25, 0.50, 0.75 and 1) were studied theoretically by using first-principles density functional theory within the generalized gradient approximation (GGA) scheme. The magnetic state is found to be energetically more favorable than the non-magnetic one. The calculated results reveal that with increasing Al concentration, the lattice parameter slightly decreases. Furthermore, the calculated densities of states for Co2MnGa, Co2MnAl and Co2MnGa1-xAlx (x = 0.25, 0.50 and 0.75) show a half-metallic behavior.\u0000Keywords: Heusler, Half metallic, Co-based heusler, Magnetic moment.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44012760","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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