Magnetic properties and structures of amorphous Tb31Fe69thin films

Magnetic films of Tb
31
Fe
69
were prepared with substrate temperatures from 77K to 773k by flash evaporation and the perpendiculer anisotropy Ku has been studied with the amorphous nature. In a substrate temperature range of 77K to 623K, all films are amorphous and Ku increases up to 7×10
⁶
erg/cm
³
with the increase of the substrate temperature. A columnar structure could not be found in this range. The annealing effect for Ku was examined together with structure analysis.