DocumentCode :
959596
Title :
Magnetization, magnetocrystalline anisotropy and magnetostriction of Tb2 Co17 , Ho2 Co17 and Er2 Co17 single crystals
Author :
Miller, A.E. ; D´Silva, T. ; Rodrigues, H.
Author_Institution :
University of Notre Dame, Notre Dame, Indiana
Volume :
12
Issue :
6
fYear :
1976
fDate :
11/1/1976 12:00:00 AM
Firstpage :
1006
Lastpage :
1008
Abstract :
This paper describes the temperature dependence of magnetization, the anisotropy constant K1 and the magnetostriction constant λgammaof single crystals of Tb2 Co17 , Ho2 Co17 and Er2 Co17 over the temperature range 77.4°K to 400°K. Tb2 Co17 and Ho2 Co17 have a uniformly easy magnetization in the basal plane while Er2 Co17 maintains an easy C axis over the entire temperature range. The anisotropy constant K1 was determined by a least square fit of the theoretical equation of magnetization to the measured magnetization curve along the hard axis. The anisotropy constant K1 at 297°K for Tb2 Co17 , Ho2 Co17 and Er2 Co17 is, 
, 
and 
ergs/cm3, respectively. The magnetostriction coefficient λγwas determined by the strain gage technique. The contribution of the Tb ion to the magnetostriction constant λγof the R2 Co17 compound is positive whereas the contribution of the Ho ion is negative. The magnetostrictive behavior of the Tb ion is single ion in nature.
, and ergs/cm3, respectively. The magnetostriction coefficient λγwas determined by the strain gage technique. The contribution of the Tb ion to the magnetostriction constant λγof the RKeywords :
Magnetic anisotropy; Magnetic thermal factors; Magnetostriction; Permanent magnet materials; Anisotropic magnetoresistance; Crystals; Erbium; Least squares methods; Magnetic anisotropy; Magnetization; Magnetostriction; Perpendicular magnetic anisotropy; Temperature dependence; Temperature distribution;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1976.1059170
Filename :
1059170
Link To Document :
