High Magnetic Field Dependence of Magnetodielectric Properties in Sr2CoSi2O7 Crystal
- Resource Type
- Authors
- Tomoya Tadokoro; Takumi Kihara; Mitsuru Akaki; Hideki Kuwahara; Masashi Tokunaga
- Source
- Journal of Low Temperature Physics. 170:291-295
- Subject
- Magnetization
Paramagnetism
Polarization density
Materials science
Condensed matter physics
Antiferromagnetism
General Materials Science
Multiferroics
Dielectric
Condensed Matter Physics
Single crystal
Atomic and Molecular Physics, and Optics
Magnetic field
- Language
- ISSN
- 1573-7357
0022-2291
We have investigated magnetic and dielectric properties of akermanite Sr2CoSi2O7 single crystal in which the orbital hybridization is controllable by external magnetic fields. Sr2CoSi2O7 shows the electric polarization that is originated from asymmetric orbital hybridization induced by magnetic field. This induced electric polarization was observed even at temperatures considerably higher than the magnetic transition temperature. The polarization data obtained for the paramagnetic phase are scaled with the square of the induced magnetization. By the discussion of the crystal symmetry, the space group of a polar state of akermanite materials is probably Cmm2.