Evolution of exchange interaction constants across magnetic phase transitions in the chromium spinel oxide CdCr2 O4

Shojiro Kimura, Yuya Sawada, Yasuo Narumi, Kazuo Watanabe, Masayuki Hagiwara, Koichi Kindo, Hiroaki Ueda

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

High field electron spin resonance (ESR) and magnetization measurements reveal the crucial role of the strong spin-lattice coupling to generate the peculiar phase transitions in the chromium spinel oxide CdCr2O4, which possesses a spin-driven Jahn-Teller transition and a field-induced 1/2-magnetization plateau state. From our analysis of the ESR modes and the spin wave dispersion, which was observed from the previous neutron scattering studies, these magnetic properties are shown to originate from the modifications of the exchange interactions due to the lattice distortions. The evaluated exchange constants are examined by the magnetoelastic theory proposed by Penc etal.

Original languageEnglish
Article number144410
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number14
DOIs
Publication statusPublished - 2015 Oct 9

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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