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Phase Transition Spin Glass-Long Magnetic Order in New Thiospinels Containing Cu, Cr and Sb

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Koroleva L. I., Demin R. V., Mashaev M. K., Saiflullaeva D. A., Virovets T. V., Kessler Y. A., Filimonov D. S.

Acta Physica Polonica A

1997

vol. 92

issue 2

441-444

The reentrant spin-glass transition was found in the samples of solid solutions CuCr_{1.5+0.5x}Sb_{0.5-0.5x}S_{4} with x=0.34 and 0.4. The transition temperature to the spin-glass state T_{f}, determined from the bend on the temperature dependence of the initial susceptibility in an ac magnetic field, depends on the measurement frequency. It was shown that the dependence T_{f}(ω) obeys the power law 1/ω=(1/ω_{0})[T_{f}/(T_{f} - T*)]^{zν} assuming existence of the phase transition at T*. The maximum of the temperature dependence of electroresistivity was found for the sample with x=0.34 in T* region. These facts show that considered spin-glass-long magnetic order transition is the phase transition.

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1 Acta Physica Polonica A

1 1997

1 Demin R. V.

1 Filimonov D. S.

1 Kessler Y. A.

1 Koroleva L. I.

1 Mashaev M. K.

1 Saiflullaeva D. A.

1 Virovets T. V.

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Phase Transition Spin Glass-Long Magnetic Order in New Thiospinels Containing Cu, Cr and Sb