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

The model recently proposed by M.A. Chuev [JETP Lett. 85, 611 (2007)] has been analyzed. It has been shown that the anisotropy corrections near the blocking temperature always lead to a magnetization lower than the equilibrium value, contrary to the findings in Chuev’s work. In addition, the asymptotic high-temperature limit of Chuev’s model is inconsistent with the expected thermodynamic limit. Moreover, even at a low temperature, only a careful implementation of this theory can guarantee arriving at the correct result, avoiding some wrong conclusions in Chuev’s work. [ABSTRACT FROM AUTHOR]