Ti. Ivanova et al., SPIN-REORIENTATION TRANSITIONS AND MAGNETIC-ANISOTROPY IN TBFE11-XCOXTI COMPOUNDS, Journal of alloys and compounds, 280(1-2), 1998, pp. 20-25
The aim of this work is to study the influence of substitution of Co f
or Fe on the magnetocrystalline anisotropy and spin reorientation tran
sition in TbFe11-xCoxTi (x=0;0.5;1;2;3;4;5) compounds. The anisotropy
study has been performed by means of torque and magnetization measurem
ents on single crystal samples. It was shown that increase of the Co c
ontent in Tb(FeCo)(11)Ti compounds leads to an increase of the Curie t
emperatures T-c. The temperature of the magnetic phase transition duri
ng which the easy magnetic direction (EMD) changes from the c-axis via
a cone to the basal plane has been found to decrease with increasing
Co concentration. On the basis of the experimental results a T-x magne
tic phase diagram was constructed. The appearance of phase transitions
can be explained by the temperature-dependent competition between the
planar Tb sublattice anisotropy and the transition metal (FeCo),, sub
lattice anistropy. (C) 1998 Published by Elsevier Science S.A. All rig
hts reserved.