Large magnetochromism in multiferroic MnWO4

被引：4
|
作者：
Toyoda, S. [1 ]
Abe, N. [1 ]
Arima, T. [1 ]
Kimura, S. [2 ]
机构：
[1] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
PHYSICAL REVIEW B | 2015年 / 91卷 / 05期
基金：
日本学术振兴会;
关键词：
FIELD;
D O I：
10.1103/PhysRevB.91.054417
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have performed a measurement of optical absorption in multiferroic MnWO4 in high magnetic fields. This material undergoes magnetic-field-induced successive phase transitions at low temperatures. The spectrum of the optical absorption originating from spin-forbidden d-d excitations at Mn2+ ions was found to change with the phase transitions. The observed magnetochromism suggests that the magnetic moments align approximately along the b axis in the high-field (HF) paraelectric phase above 12 T.
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页数：4
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