SrFeO2.95:: A helical antiferromagnet with large magnetoresistance -: art. no. 024414

被引：43

作者：

Zhao, YM ^{[1
]}

Mahendiran, R

Nguyen, N

Raveau, B

Yao, RH

机构：

[1] Shantou Univ, Dept Phys, Shantou 515063, Guangdong, Peoples R China

[2] ISMRA, Lab CRISMAT, CNRS, UMR 6508, F-14050 Caen, France

[3] Univ Caen, F-14050 Caen, France

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.64.024414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Resistivity, magnetoresistance, and Mossbauer effect of metallic spiral antiferromagnet SrFeO2.95 have been examined in the temperature range 4.5-300 K. A large negative magnetoresistance below 50 K is observed. We find hysteresis in resistivity in 0 and 9 T due to the coexistence of antiferromagnetic and paramagnetic domains in the temperature region 50-80 K. Our result shows two contributions to magnetoresistance: one below 50 K that is due to helical-conical spin transformation and another close to TN that is due to reduced spin fluctuation under magnetic field.

引用

页数：5

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