High magnetic field dependence of magnetodielectric properties in Sr 2CoSi2O7 crystal

M. Akaki; T. Tadokoro; T. Kihara; M. Tokunaga; H. Kuwahara

doi:10.1007/s10909-012-0796-z

High magnetic field dependence of magnetodielectric properties in Sr ₂CoSi₂O₇ crystal

M. Akaki, T. Tadokoro, T. Kihara, M. Tokunaga, H. Kuwahara

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have investigated magnetic and dielectric properties of åkermanite Sr₂CoSi₂O₇ single crystal in which the orbital hybridization is controllable by external magnetic fields. Sr ₂CoSi₂O₇ 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 åkermanite materials is probably Cmm2.

Original language	English
Pages (from-to)	291-295
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	170
Issue number	5-6
DOIs	https://doi.org/10.1007/s10909-012-0796-z
Publication status	Published - Mar 2013
Externally published	Yes

Keywords

Antiferromagnetism
Cobaltite
Magnetoelectric effects
Multiferroics

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1007/s10909-012-0796-z

Cite this

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title = "High magnetic field dependence of magnetodielectric properties in Sr 2CoSi2O7 crystal",

abstract = "We have investigated magnetic and dielectric properties of {\aa}kermanite Sr2CoSi2O7 single crystal in which the orbital hybridization is controllable by external magnetic fields. Sr 2CoSi2O7 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 {\aa}kermanite materials is probably Cmm2.",

keywords = "Antiferromagnetism, Cobaltite, Magnetoelectric effects, Multiferroics",

author = "M. Akaki and T. Tadokoro and T. Kihara and M. Tokunaga and H. Kuwahara",

note = "Funding Information: Acknowledgements This work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, through a Grant-in-Aid for Scientific Research (23340096).",

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doi = "10.1007/s10909-012-0796-z",

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T1 - High magnetic field dependence of magnetodielectric properties in Sr 2CoSi2O7 crystal

AU - Akaki, M.

AU - Tadokoro, T.

AU - Kihara, T.

AU - Tokunaga, M.

AU - Kuwahara, H.

N1 - Funding Information: Acknowledgements This work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan, through a Grant-in-Aid for Scientific Research (23340096).

PY - 2013/3

Y1 - 2013/3

N2 - We have investigated magnetic and dielectric properties of åkermanite Sr2CoSi2O7 single crystal in which the orbital hybridization is controllable by external magnetic fields. Sr 2CoSi2O7 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 åkermanite materials is probably Cmm2.

AB - We have investigated magnetic and dielectric properties of åkermanite Sr2CoSi2O7 single crystal in which the orbital hybridization is controllable by external magnetic fields. Sr 2CoSi2O7 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 åkermanite materials is probably Cmm2.

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KW - Multiferroics

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