Surface and Thin Film Magnetization of Isotropic and Anisotropic Heisenberg Ferromagnet at Low Temperatures

• Authors: P. Modrak
• Languages of publication: EN

Abstracts

EN

The independent random walk method (which is equivalent to the noninteracting spin wave method) with no further approximations was used to calculate the low temperature expansion of: (i) the local mean spin values of an isotropic Heisenberg ferromagnet for semi-infinite crystal and (ii) the spontaneous magnetization of an anisotropic Heisenberg ferromagnet for monolayer and double layer. The full low temperature expansion starting with T^{3/2} term was obtained for the semi-infinite Heisenberg ferromagnet and it was shown that the spontaneous magnetization for thin films of anisotropic Heisenberg ferromagnets can exhibit a quasi-linear behaviour in certain temperature region related to the magnitude of the anisotropy.

Keywords

EN

75.70.Ak; 75.30.Pd

Discipline

• 75.70.Ak: Magnetic properties of monolayers and thin films

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 93
• Issue: 5-6
• Pages: 785-797

Dates

published

1998-05

received

1998-01-26

Contributors

author

P. Modrak

• Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland

Identifiers

DOI

10.12693/APhysPolA.93.785