Authors : N.E. Chakri , M. Guerrioune and G. Fillion
Abstract: The paper describes a study on the magnetic properties of amorphous Tb1-xCox binary films prepared by sputtering. Results are given for the composition dependence of Curie temperature and magnetisation on the room temperature. The aim of this work is to study the magnetic properties of Tb1-xCox amorphous alloys with respect to the composition. Magnetisation processes have been studied over a wide range of fields (up to 8 Tesla) and temperature range (10-300 K) by using a vibrating sample magnetometer (VSM). The magnetic properties for Tb1-x Cox have been investigated in a range of 0.48 x 0.78. We have found a large anisotropy at room temperature with ordering temperatures up to about 600 K. For the samples which are ferromagnetic at room temperature (i.e., x 0.62). The hysteresis loops describe the intrinsic anisotropy which can be analysed in terms of a biaxial anisotropy. No saturation was observed for fields up to 8 T due to the sperimagnetic nature of such materials.
N.E. Chakri , M. Guerrioune and G. Fillion , 2006. A study of magnetic properties for sputtered amorphous films Tb-Co based alloys. Journal of Engineering and Applied Sciences, 1: 248-251.