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Realization of Giant Magnetoelectricity in Helimagnets SCIE SCOPUS

Title
Realization of Giant Magnetoelectricity in Helimagnets
Authors
Chun, SHChai, YSOh, YSJaiswal-Nagar, DHaam, SYKim, ILee, BNam, DHKo, KTPark, JHChung, JHKim, KH
Date Issued
2010-01-22
Publisher
AMER PHYSICAL SOC
Abstract
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.
URI
https://oasis.postech.ac.kr/handle/2014.oak/12471
DOI
10.1103/PHYSREVLETT.104.049901
ISSN
0031-9007
Article Type
Article
Citation
PHYSICAL REVIEW LETTERS, vol. 104, no. 3, 2010-01-22
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