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Enhanced giant magnetoresistance in Ni-doped antipervoskite compounds GaCMn3-xNix(x=0.05,0.10).
- Source :
-
Applied Physics Letters . 11/30/2009, Vol. 95 Issue 22, p222509. 3p. 3 Graphs. - Publication Year :
- 2009
-
Abstract
- We report an enhanced negative giant magnetoresistance (GMR) with larger temperature span in Ni-doped antipervoskite compounds GaCMn3-xNix. The observed GMR can peak at ∼75% (at 85 kOe) and exceed 60% (at 50 kOe) over a temperature span of approximate 110 and 50K for x=0.05 and 0.10, respectively. Compared with the parent GaCMn3, the well-enhanced GMR in Ni-doped samples is suggested to be associated with the partially suppressed antiferromagnetic (AFM) ground state, which favors the transition from the high-resistivity AFM state to the low-resistivity canted ferromagnetic state under an external magnetic field. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 95
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 45610517
- Full Text :
- https://doi.org/10.1063/1.3268786