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

Journal Article

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. © 2011 The Physical Society of Japan.

Full Text

Duke Authors

Cited Authors

  • Asano, T; Nishimura, T; Ichimura, S; Inagaki, Y; Kawae, T; Fukui, T; Narumi, Y; Kindo, K; Ito, T; Haravifard, S; Gaulin, BD

Published Date

  • September 1, 2011

Published In

Volume / Issue

  • 80 / 9

Electronic International Standard Serial Number (EISSN)

  • 1347-4073

International Standard Serial Number (ISSN)

  • 0031-9015

Digital Object Identifier (DOI)

  • 10.1143/JPSJ.80.093708

Citation Source

  • Scopus