1. Study on thermal hysteresis of Sr doped manganites.
- Author
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Singh, Bharat, Kumar, Naresh, Mohan, Rajneesh, Bhattacharya, S., and Gaur, N. K.
- Subjects
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MANGANITE , *HYSTERESIS , *STRONTIUM compounds , *THERMAL analysis , *X-ray diffraction , *SOLID state chemistry - Abstract
We have studied the thermal hysteresis of dc electrical resistivity on the stoichiometric Nd0.67Sr0.33MnO3 and Pr0.67Sr0.33MnO3 manganites. The polycrystalline samples have been synthesized by solid state reaction method. The prepared samples were characterized by X-ray diffraction (XRD) for phase formation and low temperature dc resistivity measurement during both cooling and warming with standard four probe technique. The XRD patterns are indexed in orthorhombic unit cell (space group-Pnma). The resistivity data show a metal-insulator phase transition for both Pr0.67Sr0.33MnO3 and Nd0.67Sr0.33MnO3 samples with observable thermal hysteresis. Thermal coefficient of resistivity of all samples has also been studied. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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