Open AccessINLUENCE OF SUBSTITUTION OF TRANSITION ELEMENTS FOR BORON ON THE INDUCED MAGNETIC ANISOTROPY IN COBALT BASE AMORPHOUS ALLOYS
Author(s) -
Qun Wang,
He Kai-Yuan
Publication year - 1987
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.36.95
Subject(s) - materials science , cobalt , annealing (glass) , amorphous solid , boron , anisotropy , vanadium , kinetic energy , amorphous metal , condensed matter physics , isothermal process , magnetic anisotropy , transition metal , nuclear magnetic resonance , magnetization , thermodynamics , crystallography , metallurgy , magnetic field , physics , alloy , optics , chemistry , catalysis , biochemistry , quantum mechanics , nuclear physics
The substitution effect of a few percent of V and Nb for boron in the cobalt base amorphous alloys on the induced magnetic anisotropy has been investigated. Disk shape samples have been subjected to isothermal magnetic annealing in the temperature range 260-320℃. The kinetic curves of formation of induced anisotrpy have been measured with a sensitive torque-magnetometer and the kinetic parameters have been calculated by assuming that the distribution of re-lexation time obeys a log-normal law. These results show that subtitution of vanadium or neobi-um for boron in the cobalt amorphous alloys can reduce the Ku∞ (T) effectively but only have-a very slight effect on the kinetic parameters. The problems of the influences of transition metal additions on the induced magneto anisotropy and stability are discussed.