Exchange bias effect in multiferroic Eu0.75Y0.25MnO3

被引：8
|
作者：
Yan, Li-Qin [1 ]
Wang, Fen [1 ]
Zhao, Yuelei [1 ]
Zou, Tao [1 ]
Shen, Jun [2 ]
Sun, Young [1 ]
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2012年 / 324卷 / 16期
关键词：
Exchange bias; Multiferroic; Manganite; POLARIZATION;
D O I：
10.1016/j.jmmm.2012.03.054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The exchange bias phenomenon has been investigated in multiferroic Eu0.75Y0.25MnO3. The material shows a weak ferromagnetism with cone spin configuration induced by external magnetic field below 30 K. Consequently, the electric polarization coming from the cycloid spin order below 30 K can be suppressed by external magnetic fields. The magnetic hysteresis loops after cooling in a magnetic field exhibit characteristics of exchange bias below the spin glassy freezing temperature (T-g)similar to 16 K. The exchange bias field, coercivity field, and remanent magnetization increase with increasing cooling magnetic field. The exchange bias effect is ascribed to the frozen uncompensated spins at the antiferromagnetism/weak ferromagnetism interfaces in the spin-glass like phase. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：2579 / 2582
页数：4
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