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Magnetization Study in CuCr2O4 Spinel Oxide


We report magnetization and ac susceptibility as functions of the temperature and frequency for CuCr2O4 spinel oxide from 2 K to 300 K. Bulk CuCr2O4 crystallizes at room temperature in a tetragonal distorted spinel and above 865 K its structure is cubic spinel; distortion is caused by Jahn–Teller Cu2+ ions. The magnetization data of the polycrystalline sample indicates ferrimagnetic order below T C =122 K. Magnetization isotherm resulted in an average magnetic moment of 0.08 μB/f.u. at 2 K values lowest to expected value. This discrepancy can be explained assuming a triangular configuration of spins Cr3+ and Cu2+. The ferromagnetic phase of the sample does not show glassy behavior. Its magnetic response can be explained simply from the domain wall dynamics of otherwise homogeneous ferrimagnet.

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The authors wish to thank the Brazilian funding agencies CNPq, CAPES, and FAPITEC/SE for financial support.

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Correspondence to Thiago T. Gurgel.

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Gurgel, T.T., Buzinaro, M.A. & Moreno, N.O. Magnetization Study in CuCr2O4 Spinel Oxide. J Supercond Nov Magn 26, 2557–2559 (2013).

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  • CuCr2O4
  • Chromites
  • Ferrimagnetic ordering