1. Phase separation and huge enhancement of magnetoresistance in Pr0.65Ca0.35-xSrxMnO3.
- Author
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S. Mollah, Sun, C. P., Huang, H. L., Ho, P. L., and Yang, H. D.
- Subjects
ELECTRONICS ,POLYCRYSTALS ,MAGNETORESISTANCE ,TEMPERATURE ,MAGNETIC fields ,PHYSICS - Abstract
The electronic, magnetic, and thermal properties of polycrystalline Pr
0.65 Ca0.35-x Srx MnO3 (x=0–0.35) perovskites have been elaborately investigated. A huge enhancement of magnetoresistance (MR) (10% at H=100 Oe and 99% at H=0.5 T) has been observed in an x=0.1 sample around the metal-insulator (MI) transition temperature (TMI ∼80 K) which is induced by the phase separation (PS). This study opens the possibility to search for the polycrystalline colossal magnetoresistive materials with a very high MR at low magnetic fields on the basis of PS phenomena for potential applications. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]- Published
- 2004
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