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Model exchange‐spring nanocomposite magnetic grains
Author(s) -
Szlaferek A.
Publication year - 2004
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.200301992
Subject(s) - nanocomposite , nucleation , magnetization , shell (structure) , spring (device) , condensed matter physics , materials science , magnetic field , phase (matter) , nonlinear system , hard core , physics , composite material , thermodynamics , statistical physics , quantum mechanics
The magnetization reversal in nanocomposite two‐phase grains embedded in a soft magnetic matrix is calculated using Brown's equation. The grains are spherical, consisting of a soft core surrounded by a hard shell. The calculation yields nonlinear algebraic expressions whose solutions describe the nucleation field as a function of the geometrical and magnetic parameters of the grains. The magnetization reversal depends not only on the total grain size but also on the shell thickness. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)