Present research work reports the synthesis of visible light-active ZnO photocatalyst through modification with N/GO and Fe2O3/GO. Modified ZnO samples are characterized by XRD. Photocatalytic activities of samples are measured in waste water consist of organic pollutants such as Malachite green (MG). N-ZnO/GO samples exhibited better photocatalytic degradation as compare to Fe2O3 doped ZnO. Dye degradation follow first order kinetic and rate constants are also measured.
{"title":"Role of N-ZnO/GO and Fe2O3-ZnO in photocatalytic activity","authors":"N. Verma, Manju, T. Chundawat, D. Vaya","doi":"10.1063/5.0061215","DOIUrl":"https://doi.org/10.1063/5.0061215","url":null,"abstract":"Present research work reports the synthesis of visible light-active ZnO photocatalyst through modification with N/GO and Fe2O3/GO. Modified ZnO samples are characterized by XRD. Photocatalytic activities of samples are measured in waste water consist of organic pollutants such as Malachite green (MG). N-ZnO/GO samples exhibited better photocatalytic degradation as compare to Fe2O3 doped ZnO. Dye degradation follow first order kinetic and rate constants are also measured.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75389225","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}
The present paper address the pressure-induced phase transitions from the sixfold-coordinated NaCl structure (B1) to the eightfold-coordinated CsCl structure (B2) in IIA–VI chalcogenide compounds, and their ternary mixed crystals BaSe1-xSx for 0 ≤ x ≤ 1 by applying an effective interionic interaction potential, which includes the long range Coulomb, van der Waals (vdW) interaction and the short-range repulsive interaction upto second-neighbor ions within the Hafemeister and Flygare approach. Assuming that both the ions are polarizable, the Slater-Kirkwood variational method is employed to estimate the vdW coefficients for parent compounds. The estimated values of the phase transition pressure (Pt) increase with S concentration. The vast volume discontinuity in pressure volume phase diagram identifies the structural phase transition from B1 to B2 structure.
{"title":"High-pressure structural phase-transition in BaSe1-xSx compounds","authors":"A. Jain, Poornima Karil, R. Kinge, N. Kaurav","doi":"10.1063/5.0062748","DOIUrl":"https://doi.org/10.1063/5.0062748","url":null,"abstract":"The present paper address the pressure-induced phase transitions from the sixfold-coordinated NaCl structure (B1) to the eightfold-coordinated CsCl structure (B2) in IIA–VI chalcogenide compounds, and their ternary mixed crystals BaSe1-xSx for 0 ≤ x ≤ 1 by applying an effective interionic interaction potential, which includes the long range Coulomb, van der Waals (vdW) interaction and the short-range repulsive interaction upto second-neighbor ions within the Hafemeister and Flygare approach. Assuming that both the ions are polarizable, the Slater-Kirkwood variational method is employed to estimate the vdW coefficients for parent compounds. The estimated values of the phase transition pressure (Pt) increase with S concentration. The vast volume discontinuity in pressure volume phase diagram identifies the structural phase transition from B1 to B2 structure.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80236973","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}
The nature of the electronic structure and bonding in transition metal compounds is matter of intrinsic interest. High-energy spectroscopic are well suited to provide information on these points. Among them, X-ray absorption spectroscopy (XAS) has been revealed to be a potential tool for determining the electronic and geometrical structure of complex compounds. In particular, K edge and XANES spectra of transition metal complexes have been the topic of several studies. The position and shape of X-ray absorption discontinuities have been used to deduce structural and chemical bonding information on transition metal complexes. The K-absorption spectra were recorded on the synchrotron radiation, i.e., on beamline BL-8 at RRCAT, Indore . XANES reveal to identify the allowed transitions and also the mixing or splitting of the final state orbital. [1, 2] Using known structural data, informative deductions on structure-bonding relations have been made. copper K-edge XANES spectra have been used since they probe 1s→3d, 1s→4p transitions respectively. Since the spectra can be influenced by the state of the d orbital, which is primarily responsible for the bonding with ligands. For Cu-containing complexes, Cu K-edge XANES has been widely used to derive information on the electronic and geometrical structure.
{"title":"Interpretation and relation between chemical shift and percentage covalency of Cu(II) complexes with Schiff base ligand","authors":"S. Mishra, R. Bhatt","doi":"10.1063/5.0064302","DOIUrl":"https://doi.org/10.1063/5.0064302","url":null,"abstract":"The nature of the electronic structure and bonding in transition metal compounds is matter of intrinsic interest. High-energy spectroscopic are well suited to provide information on these points. Among them, X-ray absorption spectroscopy (XAS) has been revealed to be a potential tool for determining the electronic and geometrical structure of complex compounds. In particular, K edge and XANES spectra of transition metal complexes have been the topic of several studies. The position and shape of X-ray absorption discontinuities have been used to deduce structural and chemical bonding information on transition metal complexes. The K-absorption spectra were recorded on the synchrotron radiation, i.e., on beamline BL-8 at RRCAT, Indore . XANES reveal to identify the allowed transitions and also the mixing or splitting of the final state orbital. [1, 2] Using known structural data, informative deductions on structure-bonding relations have been made. copper K-edge XANES spectra have been used since they probe 1s→3d, 1s→4p transitions respectively. Since the spectra can be influenced by the state of the d orbital, which is primarily responsible for the bonding with ligands. For Cu-containing complexes, Cu K-edge XANES has been widely used to derive information on the electronic and geometrical structure.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81632246","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}
The role of next nearest neighbor (NNN) hopping (t') and next to NNN hopping (t'') on hole pairing and thermodynamic properties such as specific heat, entropy have been investigated using two dimensional (2D) hole-doped t-t'-t''-J model based on exact diagonalization (ED) method. Standard Periodic boundary conditions are applied to minimize error due to finite size effect as the calculations are made using small sized cluster geometry. The attraction between holes increases with the inclusion of third neighbor hopping term. The maximum probability of hole pairing is at NNN site. The system goes to more disordered and ordered state with the increase of long range hopping terms at temperature T≤0.35t and T>0.35t, respectively. A single peak nature is observed in specific heat graph.
{"title":"Hole correlation and thermodynamic properties of the 2D t-t'-t''-J model","authors":"Krishanu Roy, Srijani Ghosh, N. K. Ghosh","doi":"10.1063/5.0061912","DOIUrl":"https://doi.org/10.1063/5.0061912","url":null,"abstract":"The role of next nearest neighbor (NNN) hopping (t') and next to NNN hopping (t'') on hole pairing and thermodynamic properties such as specific heat, entropy have been investigated using two dimensional (2D) hole-doped t-t'-t''-J model based on exact diagonalization (ED) method. Standard Periodic boundary conditions are applied to minimize error due to finite size effect as the calculations are made using small sized cluster geometry. The attraction between holes increases with the inclusion of third neighbor hopping term. The maximum probability of hole pairing is at NNN site. The system goes to more disordered and ordered state with the increase of long range hopping terms at temperature T≤0.35t and T>0.35t, respectively. A single peak nature is observed in specific heat graph.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84979844","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}
A. Joshi, Shyam Sundar Pareek, R. Mangal, Narendra Bhojak
Natural fibers are used as reinforced in composites materials to save the environment for a long time. In this paper, the main discussion is on the thermal kinetics of Ber-PF composites. Ber with the botanical name ‘ZiziphusNummularia’ is the plant that is found in the arid region of western Rajasthan and other desert areas of the world. Fibers were extracted from this plant and these were used as reinforcement in phenol-formaldehyde resin. The sample of weight ratio of fibers-0.1 was prepared for thermal analysis. DSC experiments were performed on the sample with different heating rates – 10°C/min.15°C/min & 20°C/min. The values of the glass transition temperature, crystallization temperature, and heat of crystallization were calculated by analyzing DSC curves. The glass transition temperature varies between 61°C to 68°C, crystallization temperature varies between 160 ° C-170 ° C. The heats of crystallization vary from 515 mJ to 711mJ. Then the activation energy of the glass transition and crystallization process is calculated using Kissinger Model. The activation energy for glass transition is obtained roughly between 72kJ/mol - 185kJ/mol. The crystallization activation energy varies from 56kJ/mol-90kJ/mol. This study shows that reinforcing fiber with Phenol Formaldehyde enhances the thermal stability of the composite. Composites withBer’sfibers can be used in the manufacturing of automobile parts, toys, and sports instruments.
{"title":"Thermal kinetics of ber-phenol formaldehyde composite","authors":"A. Joshi, Shyam Sundar Pareek, R. Mangal, Narendra Bhojak","doi":"10.1063/5.0061647","DOIUrl":"https://doi.org/10.1063/5.0061647","url":null,"abstract":"Natural fibers are used as reinforced in composites materials to save the environment for a long time. In this paper, the main discussion is on the thermal kinetics of Ber-PF composites. Ber with the botanical name ‘ZiziphusNummularia’ is the plant that is found in the arid region of western Rajasthan and other desert areas of the world. Fibers were extracted from this plant and these were used as reinforcement in phenol-formaldehyde resin. The sample of weight ratio of fibers-0.1 was prepared for thermal analysis. DSC experiments were performed on the sample with different heating rates – 10°C/min.15°C/min & 20°C/min. The values of the glass transition temperature, crystallization temperature, and heat of crystallization were calculated by analyzing DSC curves. The glass transition temperature varies between 61°C to 68°C, crystallization temperature varies between 160 ° C-170 ° C. The heats of crystallization vary from 515 mJ to 711mJ. Then the activation energy of the glass transition and crystallization process is calculated using Kissinger Model. The activation energy for glass transition is obtained roughly between 72kJ/mol - 185kJ/mol. The crystallization activation energy varies from 56kJ/mol-90kJ/mol. This study shows that reinforcing fiber with Phenol Formaldehyde enhances the thermal stability of the composite. Composites withBer’sfibers can be used in the manufacturing of automobile parts, toys, and sports instruments.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82054096","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}
Kirkwood Buff Integrals (KBI's) play a significant role in understanding and characterizing interactions in liquid systems. In the present context, these integrals have been evaluated for a special group of polymers, called glymes, which have been extensively used in various industries including refrigeration systems and heat pumps. The importance of this method lies in using just the initial parameters of the experimental values of ultrasonic velocity, density and viscosity for evaluating the KBI's from reported thermodynamic data. Studying the behavior of these Integrals leads to a deeper understanding of these systems using which an attempt can be made to predict the right composition for which the system behaves most efficiently.
{"title":"Application of the Kirkwood Buff theory of solutions to a binary mixture of interest for refrigeration systems and heat pumps","authors":"R. Verma, K. Singh, S. Singh","doi":"10.1063/5.0061142","DOIUrl":"https://doi.org/10.1063/5.0061142","url":null,"abstract":"Kirkwood Buff Integrals (KBI's) play a significant role in understanding and characterizing interactions in liquid systems. In the present context, these integrals have been evaluated for a special group of polymers, called glymes, which have been extensively used in various industries including refrigeration systems and heat pumps. The importance of this method lies in using just the initial parameters of the experimental values of ultrasonic velocity, density and viscosity for evaluating the KBI's from reported thermodynamic data. Studying the behavior of these Integrals leads to a deeper understanding of these systems using which an attempt can be made to predict the right composition for which the system behaves most efficiently.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86257869","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}
S. Samhitha, B. A. Kumar, G. Raghavendra, P. Bindu
Copper Oxide (CuO) being one of the transition metal oxide has an unfathomable number of applications such as photoconductive functionalities, industrial and medical applications. The current study aims at the synthesis of CuO nanoparticles with the use of Saraca Indica (Ashoka) leaf extract, which acts as a reducing agent. The experimental conditions were optimized for nano-range synthesis of CuO particles. The obtained CuO nanoparticles have been characterized using various analytical techniques such as SEM, FTIR, XRD. Scanning Electron Microscope images revealed that the nanoparticles are in petal like shaped structures, having an average crystallite size of~ 14 nm. The XRD graph confirmed that the obtained CuO nanoparticles have monoclinic structure and has a preferred Morphology Index. The FTIR plot further confirmed the presence of Cu-O bonding with a slight modifications with functional groups. CuO nanoparticles of different properties and dimensions can be prepared with the help of different leaf concentrations and Copper salts. This work provides a simple, environmental friendly, tailor made and a cost effective way of synthesizing CuO nanoparticles using Green method.
{"title":"Saraca indica as reducing agent for synthesis of modified copper oxide nanoparticles at low temperatures using green synthesis method","authors":"S. Samhitha, B. A. Kumar, G. Raghavendra, P. Bindu","doi":"10.1063/5.0061021","DOIUrl":"https://doi.org/10.1063/5.0061021","url":null,"abstract":"Copper Oxide (CuO) being one of the transition metal oxide has an unfathomable number of applications such as photoconductive functionalities, industrial and medical applications. The current study aims at the synthesis of CuO nanoparticles with the use of Saraca Indica (Ashoka) leaf extract, which acts as a reducing agent. The experimental conditions were optimized for nano-range synthesis of CuO particles. The obtained CuO nanoparticles have been characterized using various analytical techniques such as SEM, FTIR, XRD. Scanning Electron Microscope images revealed that the nanoparticles are in petal like shaped structures, having an average crystallite size of~ 14 nm. The XRD graph confirmed that the obtained CuO nanoparticles have monoclinic structure and has a preferred Morphology Index. The FTIR plot further confirmed the presence of Cu-O bonding with a slight modifications with functional groups. CuO nanoparticles of different properties and dimensions can be prepared with the help of different leaf concentrations and Copper salts. This work provides a simple, environmental friendly, tailor made and a cost effective way of synthesizing CuO nanoparticles using Green method.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80600167","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}
M. Balal, Shuvam Sarkar, S. Barman, P. Sadhukhan, S. Barman
We present a photoemission study of desorption of a monolayer of argon (Ar) physisorbed on the Au(111) surface by monitoring the Ar 3p core-level spectral intensity and shape as a function of temperature. The variation of the Ar 3p signal indicates a difference of 7 K between the start and finish of the desorption process, the desorption temperature being 46 K. From an analysis of the Ar 3p core-level line shape, we have related this to two types of hybridization of the Ar atoms with different regions of the herringbone reconstructed Au(111) surface. The interaction between the ArA and Au atoms in the discommensurate region is relatively weaker compared to that between the ArB and Au atoms in the fcc and hcp regions of the herringbone reconstructed surface resulting in the desorption of the former at a lower temperature (41 K).
{"title":"Photoemission study of desorption of monolayer argon from Au(111) surface","authors":"M. Balal, Shuvam Sarkar, S. Barman, P. Sadhukhan, S. Barman","doi":"10.1063/5.0060980","DOIUrl":"https://doi.org/10.1063/5.0060980","url":null,"abstract":"We present a photoemission study of desorption of a monolayer of argon (Ar) physisorbed on the Au(111) surface by monitoring the Ar 3p core-level spectral intensity and shape as a function of temperature. The variation of the Ar 3p signal indicates a difference of 7 K between the start and finish of the desorption process, the desorption temperature being 46 K. From an analysis of the Ar 3p core-level line shape, we have related this to two types of hybridization of the Ar atoms with different regions of the herringbone reconstructed Au(111) surface. The interaction between the ArA and Au atoms in the discommensurate region is relatively weaker compared to that between the ArB and Au atoms in the fcc and hcp regions of the herringbone reconstructed surface resulting in the desorption of the former at a lower temperature (41 K).","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91339906","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}
M. Rahulraj, Thazni Hameed, K. S. Ashil, Nolvin Sunny, S. Menon
Visible light photocatalysis has emerged as one of the green methods to utilize sunlight for energy and environmental applications. In the present work, pure, Fe and Ni doped ZnO photocatalysts have been synthesized using co-precipitation method. The structural and morphological properties of pure, Fe and Ni doped nanoparticles were analysed using X-ray diffraction, Diffuse reflectance spectroscopy and photocatalytic activity was investigated by direct sunlight degradation of methylene blue dye and are studied using UV-Visible absorption spectroscopy. The X-ray diffraction studies confirmed the hexagonal wurtzite structure of all the synthesized samples and are highly crystalline. From DRS studies and Tauc plot bandgap were calculated and observed to be reduced while percentage of dopant increases. It is estimated that almost 85% of the methylene blue dye was degraded under the direct sunlight by employing UV-Visible absorption spectroscopy.
{"title":"Investigations on photocatalytic activity of Fe and Ni doped ZnO nanoparticles under direct sunlight synthesized by co-precipitation method","authors":"M. Rahulraj, Thazni Hameed, K. S. Ashil, Nolvin Sunny, S. Menon","doi":"10.1063/5.0061308","DOIUrl":"https://doi.org/10.1063/5.0061308","url":null,"abstract":"Visible light photocatalysis has emerged as one of the green methods to utilize sunlight for energy and environmental applications. In the present work, pure, Fe and Ni doped ZnO photocatalysts have been synthesized using co-precipitation method. The structural and morphological properties of pure, Fe and Ni doped nanoparticles were analysed using X-ray diffraction, Diffuse reflectance spectroscopy and photocatalytic activity was investigated by direct sunlight degradation of methylene blue dye and are studied using UV-Visible absorption spectroscopy. The X-ray diffraction studies confirmed the hexagonal wurtzite structure of all the synthesized samples and are highly crystalline. From DRS studies and Tauc plot bandgap were calculated and observed to be reduced while percentage of dopant increases. It is estimated that almost 85% of the methylene blue dye was degraded under the direct sunlight by employing UV-Visible absorption spectroscopy.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88358233","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}
Structural, microstructural and magnetic properties of polycrystalline Ni50Mn29Ga21 alloy are studied. Slight variations in processing parameters were employed to get large grain size and multimode twinning in polycrystalline alloy. The polycrystalline alloy shows significantly low detwinning stress of 19 MPa and high magnetic field induced strain of 0.7%. Presence of large grain size with multimode twinning, 7M modulated crystal structure, large magnetocrystalline anisotropy and high saturation magnetization are key factors for observation of large magnetic field induced strain in polycrystalline alloy.
{"title":"Magnetic field induced strain in polycrystalline Ni50Mn29Ga21 ferromagnetic shape memory alloy","authors":"A. Kumar, M. Ramudu","doi":"10.1063/5.0061102","DOIUrl":"https://doi.org/10.1063/5.0061102","url":null,"abstract":"Structural, microstructural and magnetic properties of polycrystalline Ni50Mn29Ga21 alloy are studied. Slight variations in processing parameters were employed to get large grain size and multimode twinning in polycrystalline alloy. The polycrystalline alloy shows significantly low detwinning stress of 19 MPa and high magnetic field induced strain of 0.7%. Presence of large grain size with multimode twinning, 7M modulated crystal structure, large magnetocrystalline anisotropy and high saturation magnetization are key factors for observation of large magnetic field induced strain in polycrystalline alloy.","PeriodicalId":18837,"journal":{"name":"NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89752376","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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