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Domain structures of ultrafine grained ferromagnets achieved by severe plastic deformation or melt quenching
Author(s) -
KORZNIKOVA G.F.
Publication year - 2010
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2010.03372.x
Subject(s) - ferromagnetism , materials science , severe plastic deformation , condensed matter physics , anisotropy , magnetic domain , quenching (fluorescence) , alloy , grain size , crystallography , magnetization , metallurgy , chemistry , magnetic field , physics , optics , quantum mechanics , fluorescence
Summary Lorentz electron microscopy was used to analyse the domain structure in some ferromagnets having an ultrafine grained structure produced by high pressure torsion (pure Ni, Fe, Co, Mn 55.5 Al 45.5 C 0.5 ) and by melt quenching ( Fe 83 Nd 13 B 4 ). For low anisotropy ferromagnets ( Ni, Fe, Co ), it has been established that the domain structure does not depend strongly on grain size. In high anisotropy ferromagnets alloy ( Mn 55.5 Al 45.5 C 0.5 and Fe 83 Nd 13 B 4 ), grain refinement causes changes in the domain structure configuration and affects the magnetization mechanism.