| Literature DB >> 26340207 |
Xiao Wang1,2, Yisheng Chai1, Long Zhou1, Huibo Cao3, Clarina-Dela Cruz3, Junye Yang1, Jianhong Dai1, Yunyu Yin1, Zhen Yuan1, Sijia Zhang1, Runze Yu4, Masaki Azuma4, Yuichi Shimakawa5, Huimin Zhang6, Shuai Dong6, Young Sun1, Changqing Jin1,2, Youwen Long1,2.
Abstract
Magnetoelectric multiferroicity is not expected to occur in a cubic perovskite system because of the high structural symmetry. By versatile measurements in magnetization, dielectric constant, electric polarization, neutron and x-ray diffraction, Raman scattering, as well as theoretical calculations, we reveal that the A-site ordered perovskite LaMn(3)Cr(4)O(12) with cubic symmetry is a novel spin-driven multiferroic system with strong magnetoelectric coupling effects. When a magnetic field is applied in parallel (perpendicular) to an electric field, the ferroelectric polarization can be enhanced (suppressed) significantly. The unique multiferroic phenomenon observed in this cubic perovskite cannot be understood by conventional spin-driven microscopic mechanisms. Instead, a nontrivial effect involving the interactions between two magnetic sublattices is likely to play a crucial role.Year: 2015 PMID： 26340207 DOI： 10.1103/PhysRevLett.115.087601
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161