"Comment on "Generalized Stoner-Wohlfarth Model and the Non-Langevin Magnetism of Single-Domain Particles" by M. A. Chuev"

E. DE BIASI; R.D. ZYSLER; C.A. RAMOS; M. KNOBEL

JETP LETTERS

Pleiades Publishing, Ltd.

Año: 2008 vol. 87 p. 703 - 706

0021-3640

In this work we analyzed the model by M.A. Chuev recently published [JETP Letters 85, 611 (2007)]. Near the blocking temperature we show that the anisotropy corrections always lead to a lower magnetization than the equilibrium value, contrary to the findings in Chuev´s work. Also we show that the asymptotic high-temperature limit of Chuev´s model is not in agreement with the expected thermodynamic limit. Moreover, even at low-temperature only a careful implementation of this theory can guarantee arriving to the correct, result, avoiding some wrong conclusions in Chuev´s work.