2022   01   en   p.08-12 A.I. Jabbarov,
Heat capacity and phase transitions in a quasi two-dimensional single crystal Cu1.04Fe1.12Te1.84


The heat capacity of the quasi-dimerous sample Cu1.04Fe1.12Te1.84 (CFT) obtained by the directional crystallization was experimentally studied in the temperature range 2–306K. On the temperature dependence of the Cp/T, a sharp maximum was revealed with TG=55K, associated with the contribution of the spin-glass state, and the blurred anomaly was revealed near TN=65K, due to the phase transition of the antiferromagnetary paramagnetic. The experimental results obtained are explained within the framework of a well-known model. From the experimental temperature dependence of the heat capacity of Cp(T) CFT (copper of iron television), the debye temperature is calculated ƟD=176.9 K, as well as the anisotropy coefficient η=0.309 and the two-dimensional temperature of the debt Ɵ2=122.2K.

Keywords: heat capacity, quasi-humid, spin-glass, antiferromagnetik.
PACS: 74.25Ha, 75,50Pp

Received: 20.12.2021


Institute of Physics of Azerbaijan NAS 131, H. Javid ave., Baku, AZ-1143
E-mail: ayd. jabb @ list.ru

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