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Magnetic Properties and Resonance Study of Gd (Co x Al 1− x ) 3 Compounds
Author(s) -
Burzo E.,
Seitabla D.,
Chiparǎ M.
Publication year - 1982
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.2221130108
Subject(s) - ferrimagnetism , laser linewidth , cobalt , electron paramagnetic resonance , materials science , condensed matter physics , magnetic moment , resonance (particle physics) , paramagnetism , field (mathematics) , analytical chemistry (journal) , crystallography , chemistry , nuclear magnetic resonance , magnetic field , metallurgy , physics , atomic physics , magnetization , mathematics , laser , quantum mechanics , chromatography , optics , pure mathematics
Gd(Co x Al 1– x ) 3 compounds with x ≧ 0.2 are ferrimagnetic. The mean cobalt moments decrease as the aluminium content is larger. The reciprocal susceptibility for ferrimagnetic compounds follows a hyperbolic law of Néeltype. The electron paramagnetic resonance measurements on GdAl 3 show that g = 1.959 and the slope of the linewidth is DH / T = 2.8 G/K. For ferrimagnetic compounds the g and DH / T values are temperature dependent. The data are analysed in a model which uses the two—sublattices molecular field approximation. Finally, the magnetic behaviour of cobalt atoms in Gd(Co x Al 1– x ) 3 compounds is analysed.