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Crystallinity, Magnetic and Electrical Properties of Bi doped LaVO3

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Show simple item record Sepiedeh, Pirasteh 2012-05-17T15:05:16Z 2012-05-17T15:05:16Z 2012-05-17
dc.description.abstract We report the results of crystal structure, magnetization and resistivity measurements of Bi doped LaVO3. X-ray diffraction (XRD) shows that if doping Bi in the La site is less than ten percent, the crystal structure of La1-xBixVO3 remains unchanged and its symmetry is orthorhombic. However, for higher Bi doping (>10%) composite compounds are found where the XRD patterns are characterized by two phases: LaVO3+V2O3. Energy-dispersive analysis of the x-ray spectroscopy (EDAX) results are used to find a proper atomic percentage of all samples. The temperature dependence of the mass magnetization of pure and single phase doped samples have transition temperatures from paramagnetic to antiferromagnetic region at TN=140 K. This measurement for bi-phasic samples indicates two transition temperatures, at TN=140 K (LaVO3) and TN=170 K (V2O3). The temperature dependence of resistivity reveals semiconducting behavior for all samples. Activation energy values for pure and doped samples are extracted by fitting resistivity versus temperature data in the framework of thermal activation process. en_US
dc.language.iso eng en_US
dc.publisher Brock University en_US
dc.subject Doped LaVO3 en_US
dc.subject Energy dispersive analysis of x-rays en_US
dc.subject X-ray diffraction en_US
dc.subject Magnetic and electrical properties en_US
dc.title Crystallinity, Magnetic and Electrical Properties of Bi doped LaVO3 en_US
dc.type Electronic Thesis or Dissertation en_US M.Sc. Physics en_US Masters en_US
dc.contributor.department Department of Physics en_US Faculty of Mathematics and Science en_US

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