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Giant magnetoresistance and magnetocaloric effects of the Mn1.82V0.18Sb compound
- Source :
-
Journal of Alloys & Compounds . Feb2004, Vol. 365 Issue 1/2, p35. 4p. - Publication Year :
- 2004
-
Abstract
- A giant magnetoresistance effect in the Mn1.82V0.18Sb compound is reported, which is associated with a first-order metamagnetic transition from an antiferromagnetic to a ferrimagnetic state, induced by an external field. The largest GMR ratio equals 26% for Mn1.82V0.18Sb and is achieved at 250 K in a field of 5 T. The origin of the GMR effect is ascribed to the reconstruction of the Fermi surface due to the collapse of the super-zone gap after the metamagnetic transition. In addition, a magnetocaloric effect with a magnetic-entropy change of −5.5 J/kg K is observed in this compound around the magnetic transition temperature. [Copyright &y& Elsevier]
- Subjects :
- *MAGNETORESISTANCE
*MANGANESE
*FERRIMAGNETISM
*ELECTRIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 365
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 11885152
- Full Text :
- https://doi.org/10.1016/S0925-8388(03)00643-1