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Realization of Giant Magnetoelectricity in Helimagnets
- Chun, Sae Hwan;
- Chai, Yi Sheng;
- Oh, Yoon Seok;
- Jaiswal-Nagar, Deepshikha;
- Haam, So Young;
- ... Chung, Jae-Ho;
- 외 6명
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171Citations
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180초록
We show that low field magnetoelectric (ME) properties of helimagnets Ba0.5Sr1.5Zn2(Fe1-xAlx)(12)O-22 can be efficiently tailored by the Al-substitution level. As x increases, the critical magnetic field for switching electric polarization is systematically reduced from similar to 1 T down to similar to 1 mT, and the ME susceptibility is greatly enhanced to reach a giant value of 2.0 x 10(4) ps/m at an optimum x = 0.08. We find that control of the nontrivial orbital moment in the octahedral Fe sites through the Al substitution is crucial for fine-tuning the magnetic anisotropy and obtaining the conspicuously improved ME characteristics.
키워드
POLARIZATION; MULTIFERROICS
- 제목
- Realization of Giant Magnetoelectricity in Helimagnets
- 저자
- Chun, Sae Hwan; Chai, Yi Sheng; Oh, Yoon Seok; Jaiswal-Nagar, Deepshikha; Haam, So Young; Kim, Ingyu; Lee, Bumsung; Nam, Dong Hak; Ko, Kyung-Tae; Park, Jae-Hoon; Chung, Jae-Ho; Kim, Kee Hoon
- 발행일
- 2010-01-22
- 유형
- Article
- 권
- 104
- 호
- 3