Colossal magnetoresistance in the layered chromium sulfide Cr2S3x (x=0.08)

P. Vaqueiro, A. V. Powell, A. I. Coldea, C. A. Steer, I. M. Marshall, S. J. Blundell, J. Singleton, and T. Ohtani
Phys. Rev. B 64, 132402 – Published 28 August 2001
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Abstract

We report structural, magnetic, and magnetotransport properties of the two-dimensional chromium sulfide Cr2S2.92, which contains both Cr3+ and Cr2+ ions. Below its magnetic-ordering temperature (TN=118K), Cr2S2.92 exhibits a weak spontaneous magnetization with a maximum around 90 K and a value of 0.013(4) μB per Cr ion at 5 K. The resistivity and magnetoresistance exhibit pronounced local maxima around TN (MR=48% in a field of 14 T). The magnetotransport properties are discussed in terms of magnetic-polaron formation.

  • Received 26 March 2001

DOI:https://doi.org/10.1103/PhysRevB.64.132402

©2001 American Physical Society

Authors & Affiliations

P. Vaqueiro and A. V. Powell

  • Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom

A. I. Coldea, C. A. Steer, I. M. Marshall, S. J. Blundell, and J. Singleton

  • Clarendon Laboratory, Oxford University, Parks Road, Oxford OX1 3PU, United Kingdom

T. Ohtani

  • Department of Chemistry, Okayama University of Science, Okayama 70-0005, Japan

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Vol. 64, Iss. 13 — 1 October 2001

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