Magnetic ordering and tunable structural phase transition in the chromic compound CuMoO4

Takayuki Asano, Taizo Nishimura, Shuta Ichimura, Yuji Inagaki, Tatsuya Kawae, Tomoya Fukui, Yasuo Narumi, Koichi Kindo, Toshimitsu Ito, Sara Haravifard, Bruce D. Gaulin

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

We report the first observation of long-range magnetic order in the chromic compound CuMoO4 at 1.75 K by means of a specific heat measurement in zero magnetic field. Magnetization measurements performed up to 57 T at 4.2 K indicate a plateau at 1/3 of the saturated magnetization consistent with a simple magnetic model of two non-interacting Cu2+ spins and two isolated antiferromagnetic dimers (J=kB = 26 K). A large temperature-hysteresis in the magnetic susceptibility is observed to originate from the structural phase transition and to be closely related to chromism between α-CuMoO4 (green) and γ-CuMoO4 (brownish-red). This discontinuous phase transition is tunable using substitutional effects in Cu1-xZnxMoO4 (0 ≥ × ≤ 0.1) and CuMo1-yWyO4 (0 ≤y ≤0.1) over a wide range of temperatures.

本文言語英語
論文番号093708
ジャーナルjournal of the physical society of japan
80
9
DOI
出版ステータス出版済み - 9 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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