Tuning antiferromagnetic exchange interaction for spontaneous exchange bias in MnNiSnSi system

被引：34

作者：

Jia, Liyun ^{[1
,2
]}

Shen, Jianlei ^{[1
]}

Li, Mengmeng ^{[1
]}

Wang, Xi ^{[1
]}

Ma, Li ^{[1
]}

Zhen, Congmian ^{[1
]}

Hou, Denglu ^{[1
]}

Liu, Enke ^{[3
]}

Wang, Wenhong ^{[3
]}

Wu, Guangheng ^{[3
]}

机构：

[1] Hebei Normal Univ, Dept Phys, Hebei Adv Thin Films Lab, Shijiazhuang 050024, Hebei, Peoples R China

[2] Hebei Inst Architecture Civil Engn, Dept Math & Phys, Zhangjiakou 075000, Peoples R China

[3] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

来源：

APL MATERIALS | 2017年 / 5卷 / 12期

基金：

中国国家自然科学基金;

关键词：

HEUSLER ALLOYS; MAGNETORESISTANCE;

D O I：

10.1063/1.5001793

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on almost all the data from the literature on spontaneous exchange bias (SEB), it is expected that the system will show SEB if it meets two conditions simultaneously: (i) there are the coexistence and competition of antiferromagnetic (AFM) and ferromagnetic (FM) interactions and (ii) AFM interaction should dominate but not be too strong in this competition. In order to verify this view, a systematic study on SEB has been performed in this work. Mn50Ni40Sn10 with strong FM interaction and without SEB is chosen as the mother composition, and the negative chemical pressure is introduced by the substitution of Sn by Si to enhance AFM interaction. It is found that a long-range FM ordering window is closed, and a long-range AFM ordering window is opened. As a result, SEB is triggered and a continuous tuning of the spontaneous exchange bias field (H-SEB) from 0 Oe to 1300 Oe has been realized in a Mn50Ni40Sn10-xSix system by the enhanced AFM interaction. (c) 2017 Author(s).

引用

页数：7

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