Unusual anisotropic magnetoresistance in charge-orbital ordered Nd0.5Sr0.5MnO3 polycrystals

被引：5

作者：

Yang, Huali ^{[1
,2
]}

Wang, Baomin ^{[1
,2
]}

Liu, Yiwei ^{[1
,2
]}

Yang, Zhihuan ^{[1
,2
]}

Zhu, Xiaojian ^{[1
,2
]}

Xie, Yali ^{[1
,2
]}

Zuo, Zhenghu ^{[1
,2
]}

Chen, Bin ^{[1
,2
]}

Zhan, Qingfeng ^{[1
,2
]}

Wang, Junling ^{[3
]}

Li, Run-Wei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Zhejiang, Peoples R China

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 23期

基金：

中国国家自然科学基金;

关键词：

THIN-FILMS; ALLOYS;

D O I：

10.1063/1.4904437

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Due to its potential application in magnetic recording and sensing technologies, the anisotropic magnetoresistance (AMR) effect has attracted lasting attention. Despite the long history, AMR effect has not been fully understood especially in the unconventional materials, such as perovskite manganites. Here, we report an unusual AMR effect in the charge-orbital ordered (COO) Nd0.5Sr0.5MnO3 polycrystals, which is observed when the magnetic field rotates in the plane that is perpendicular to the current (out-of-plane AMR). Despite being a polycrystalline sample where no anisotropy is expected, the resistivity shows a large irreversible drop with rotating magnetic field. A model has been proposed based on anisotropic magnetic field induced the melting of COO phase to explain the unusual out-of-plane AMR successfully. Our results demonstrate a new way for understanding the close relationship between phase separation and AMR effect in COO manganites. (C) 2014 AIP Publishing LLC.

引用

页数：5

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