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Some Magnetic Properties of Thin Ferromagnetic Films in the Coherent Potential Approximation ( S = 1)
Author(s) -
UrbaniakKucharczyk A.
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221810121
Subject(s) - decoupling (probability) , condensed matter physics , ferromagnetism , thin film , magnetization , coherent potential approximation , spontaneous magnetization , physics , function (biology) , materials science , quantum mechanics , magnetic field , electronic structure , control engineering , evolutionary biology , engineering , biology
Abstract The coherent potential approximation method taking into account natural disorder connected with different states of spin components is applied to thin magnetic films with spin S = 1. The distribution of spontaneous magnetization as well as the temperature dependence of the critical temperature are obtained for b.c.c. (100) films. The results obtained using Tyablikov decoupling of higher order Green function are improved in relation to the Green function results obtained with the same decoupling procedure by including the line profiles of elementary excitations.