화학공학소재연구정보센터
Materials Chemistry and Physics, Vol.172, 137-142, 2016
Spin-glass-like behaviour in Ni2InVO6
Magnetic measurements and specific heat under magnetic field showed the spin-glass-like behaviour below the freezing temperature T-f = 5 K in the phase Ni2InVO6. Positive value of the paramagnetic Curie Weiss temperature theta = 5.3 K suggests ferromagnetic short-range interaction. On the other hand, the product of chi'center dot T versus T reaches almost zero, decreasing continuously upon cooling, which indicates fully compensated AFM interactions between the metal centres. These effects appear to be responsible for the spin frustration. The presence of an antiferromagnetic-like correlations in Ni2InVO6 is suggested by a shift of the maxima in the specific heat C(T) or C(T)/T data toward lower temperatures when the magnetic field is increasing. Also, the freezing temperature attributed to the temperature of maximum in the ac magnetic susceptibility obeys the Vogel-Fulcher law, which is characteristic of spin-glasses. (C) 2016 Elsevier B.V. All rights reserved.