期刊
PHYSICAL REVIEW B
卷 80, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.092408
关键词
Hall effect; indium alloys; manganese alloys; martensitic transformations; nickel alloys
资金
- Russian Foundation [09-02-00309]
- Research Corporation [RA-0357]
- U.S. Department of Energy [DE-FG02-06ER46291]
- U.S. Department of Energy (DOE) [DE-FG02-06ER46291] Funding Source: U.S. Department of Energy (DOE)
We present experimental results on the giant Hall effect in the Heusler alloy Ni(50)Mn(50-x)In(x) with x=15.2. An unusual field dependence of the Hall resistivity (rho(H)) was observed in the vicinity of the martensitic phase transition, where rho(H) sharply increases up to rho(H) (15 kOe)=50 mu Omega cm. This value is comparable with the giant Hall resistivity in magnetic nanogranular alloys. Associated with rho(H), the Hall angle reaches a giant value of tan(-1) 0.5. An explanation of the giant Hall effect in Ni(50)Mn(50-x)In(x) Heusler alloys has been suggested.
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