Electrical control of large magnetization reversal in a helimagnet

被引:79
作者
Chai, Yi Sheng [1 ]
Kwon, Sangil [2 ]
Chun, Sae Hwan [1 ]
Kim, Ingyu [1 ]
Jeon, Byung-Gu [1 ]
Kim, Kee Hoon [1 ,3 ]
Lee, Soonchil [2 ]
机构
[1] Seoul Natl Univ, Ctr Novel States Complex Mat Res CeNSCMR, Dept Phys & Astron, Seoul 151747, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
[3] Seoul Natl Univ, Inst Appl Phys, Seoul 151747, South Korea
基金
新加坡国家研究基金会;
关键词
MULTIFERROICS; POLARIZATION;
D O I
10.1038/ncomms5208
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Reversal of magnetization M by an electrical field E has been a long-sought phenomenon in materials science because of its potential for applications such as memory devices. However, the phenomenon has rarely been achieved and remains a considerable challenge. Here we report the large M reversal by E in a multiferroic Ba0.5Sr1.5Zn2(Fe0.92Al0.08)(12)O-22 crystal without any external magnetic field. Upon sweeping E through the range of +/- 2 MVm(-1), M varied quasi-linearly in the range of +/- 2 mu(B) per f.u., resulting in the M reversal. Strong electrical modulation of M at zero magnetic field were observable up to similar to 150 K. Nuclear magnetic resonance measurements provided microscopic evidence that the electric field and the magnetic field play equivalent roles in modulating the volume of magnetic domains. Our results suggest that the soft ferrimagnetism and the associated transverse conical state are key ingredients to achieve the large magnetization reversal at fairly high temperatures.
引用
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页数:8
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