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Large magnetization change and magnetoresistance associated with martensitic transformation in Mn2Ni1.36Sn0.32Co0.32 alloy.
- Source :
-
Journal of Applied Physics . Jul2011, Vol. 110 Issue 1, p013916. 4p. 4 Graphs. - Publication Year :
- 2011
-
Abstract
- In this paper we report on the realization of magnetic field-induced martensitic phase transformation in Mn-rich Heusler alloy Mn2Ni1.36Sn0.32Co0.32. The saturation magnetization of the austenite reached 111 emu/g at 70 kOe, which decreased rapidly to 8 emu/g upon transforming to martensite. This is attributed to the crystallographic distortion from cubic structure to tetragonal structure with c/a > 1, turning the Mn moments at B sites and D sites from parallel alignment to antiparallel alignment. A large magnetoresistance of 40% was observed through the field-induced transformation. The increase of conduction electrons accompanying this field-induced martensitic transformation is estimated to be 67%. These intriguing properties render the alloy a good candidate for applications in smart devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETIZATION
*MAGNETORESISTANCE
*MARTENSITE
*AUSTENITE
*CONDUCTION electrons
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 110
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 62808874
- Full Text :
- https://doi.org/10.1063/1.3607311