Magnetic properties of R2Co17-xGax and RCo5-xGax
alloys (R = Y, Tb) in high magnetic fields
Chem.
Met. Alloys 1
(2008) 111-114
https://doi.org/10.30970/cma1.0038
W. SUSKI, N. VITYK, R. GLADYSHEVSKII, A. GILEWSKI, T.
MYDLARZ, K. WOCHOWSKI
Magnetic
properties of R2Co17-xGax and RCo5-xGax
alloys, where R = Y and Tb, have been investigated in steady and pulsed
magnetic fields up to 14 and 34 T, respectively. For the Y2Co17-xGax
alloys saturation is reached in relatively low magnetic fields and the
saturation magnetic moment decreases with increasing Ga content. No saturation
was observed for the YCo5-xGax alloys and the Curie
temperatures were lower than for the corresponding 2:17 phases. The Curie
temperatures of the TbCo5-xGax samples were also lower
than for the corresponding 2:17 materials. The Tb compounds did not reach
saturation even in the highest magnetic field. The minimum in the temperature
dependence of the magnetization is an indication of ferrimagnetic character.
The substitution of Ga for Co in TbCo5-xGax increases the
magnetic moment, which may be explained as a result of the replacement of Co
atoms with magnetic moments antiparallel to those of the Tb atoms.
Magnetic
moment of Y2Co17-xGax and YCo5-yGay
vs. pulsed magnetic field at 4.2 K. The
solid lines are for the former alloys and the dashed lines for the latter ones.
Keywords
Rare-earth alloys and compounds / Magnetic
measurements / Magnetization