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

doi:10.1143/JPSJ.80.093708

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

Applied Physics

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

8 Citations (Scopus)

Abstract

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=k_B = 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 Cu_1-xZn_xMoO₄ (0 ≥ × ≤ 0.1) and CuMo_1-yW_yO₄ (0 ≤y ≤0.1) over a wide range of temperatures.

Original language	English
Article number	093708
Journal	journal of the physical society of japan
Volume	80
Issue number	9
DOIs	https://doi.org/10.1143/JPSJ.80.093708
Publication status	Published - Sept 2011

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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title = "Magnetic ordering and tunable structural phase transition in the chromic compound CuMoO4",

abstract = "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.",

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

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doi = "10.1143/JPSJ.80.093708",

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T1 - Magnetic ordering and tunable structural phase transition in the chromic compound CuMoO4

AU - Asano, Takayuki

AU - Nishimura, Taizo

AU - Ichimura, Shuta

AU - Inagaki, Yuji

AU - Kawae, Tatsuya

AU - Fukui, Tomoya

AU - Narumi, Yasuo

AU - Kindo, Koichi

AU - Ito, Toshimitsu

AU - Haravifard, Sara

AU - Gaulin, Bruce D.

PY - 2011/9

Y1 - 2011/9

N2 - 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.

AB - 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.

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JO - journal of the physical society of japan

JF - journal of the physical society of japan

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ER -

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

Abstract

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