Large magnetoresistance and metamagnetic transition in PrGa

被引：19

作者：

Chen, J. ^{[1
,2
]}

Zheng, X. Q. ^{[1
]}

Dong, Q. Y. ^{[3
]}

Sun, J. R. ^{[1
]}

Shen, B. G. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[2] China Aerosp Sci & Technology Corp, Beijing Inst Aerosp Testing Technol, Beijing 100074, Peoples R China

[3] Capital Normal Univ, Dept Phys, Beijing 100048, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 12期

基金：

中国国家自然科学基金;

关键词：

GIANT MAGNETORESISTANCE; HYPERFINE INTERACTIONS; ATOMS;

D O I：

10.1063/1.3641879

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic phase transition and the magnetoresistance (MR) in bulk intermetallic PrGa compound are investigated experimentally. Two successive magnetic transitions, ferromagnetic (FM)-antiferromagnetic (AFM) transition and AFM-paramagnetic transition, are observed at T(1) = 28 K and T(2) = 36 K, respectively. It is found that the PrGa compound exhibits a field-induced metamagnetic transition from A:FM to FM state and a considerable change in lattice constants in a temperature range of 28-36 K. Accompanied with the AFM-FM transition, a negative MR occurs, and the maximal MR values are, similar to 30% and similar to 34% at 28 K under the fields of 1 T and 5 T, respectively. (C) 2011 American Institute of Physics. [doi:10.1063/1.3641879]

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