A simultaneous magneto-dielectric phase transition in RbCoBr3

Takashi Shirahata; Tota Nakamura

doi:10.1143/JPSJ.73.254

A simultaneous magneto-dielectric phase transition in RbCoBr₃

Takashi Shirahata, Tota Nakamura

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

We have modeled magneto-dielectric phase transitions in ABX ₃-type layered triangular lattice compounds. The model consists of a spin system (magnetic transition) and a lattice system (dielectric transition). Magnetic exchange interactions are supposed to change with a relative position between two spins. This assumption produces an effective coupling between the lattice and the spin. Applying the nonequilibrium relaxation method, we have found that a simultaneous magneto-dielectric phase transition occurs when energy scales of the spin part and the lattice part coincide. An intermediate phase like the partial disordered phase disappears. Both systems relax frustration of the other system cooperatively and realize ordered states.

Original language	English
Pages (from-to)	254-261
Number of pages	8
Journal	Journal of the Physical Society of Japan
Volume	73
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.73.254
Publication status	Published - 2004 Jan
Externally published	Yes

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Keywords

Layered triangular lattice
Magneto-dielectric transition
Nonequilibrium relaxation method
Relaxation of frustration by lattice distortion

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Shirahata, T., & Nakamura, T. (2004). A simultaneous magneto-dielectric phase transition in RbCoBr₃. Journal of the Physical Society of Japan, 73(1), 254-261. https://doi.org/10.1143/JPSJ.73.254

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10.1143/JPSJ.73.254