期刊
APPLIED PHYSICS LETTERS
卷 94, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3147195
关键词
calcium compounds; canted spin arrangements; cobalt compounds; dielectric polarisation; magnetoelectric effects; multiferroics; Neel temperature; paramagnetic-antiferromagnetic transitions
资金
- Japan Society for Promotion of Science
We have investigated the magnetic and dielectric properties of Ca2CoSi2O7 crystal. The dielectricity and magnetism of Ca2CoSi2O7 are strongly coupled below a canted antiferromagnetic transition temperature (T-N). Magnetic fields induce electric polarization below T-N. Interestingly, the magnetic-field-induced electric polarization is detected even without poling electric fields. Below T-N, a canted antiferromagnetic-paramagnetic transition is induced by magnetic fields. The large magnetocapacitance is observed around T-N. The origin of the large magnetocapacitance is due to the magnetic-field-induced the canted antiferromagnetic-paramagnetic transition.
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