Observation of spin-glass behavior in antiperovskite compound SnCFe3

Wang, B. S.; Tong, P.; Sun, Y. P.; Zhu, X. B.; Yang, Z. R.; Song, W. H.; Dai, J. M.
July 2010
Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p042508
Academic Journal
We investigated the physical properties of antiperovskite compound SnCFe3 by comprehensive magnetic measurements. The strong irreversibility is clearly observed from zero-field-cooled and field-cooled magnetizations. The peaks of ac susceptibility display strong dependences on the frequency and magnetic field. Both the magnetic relaxation effects and related analysis indicate a typical spin-glass (SG) behavior in SnCFe3. The corresponding characteristic parameters are obtained: the freezing temperature T0=20.3 K, the dynamical exponent zν=9.441, and the flipping time τ0=2.42×10-11 s. Furthermore, the Sn deficiency affects significantly the SG behavior and results in a sharp decrease in T0.


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