Role of magnetic anisotropy on magnetostrictive propertiesof quasi-binary ferromagnetic Tb1−xGdxFe2 system

The magnetic and magnetostrictive properties of polycrystalline alloys Tb
_i-x
Gd
_x
Fe
₂
(0≤x≤1) have been investigated. The curie temperature of Tb
_1-x
Gd
_x
Fe
₂
increases while room temperature saturation magnitization Ms decreases monotonously with increasing Gd concentration. Furthermore the magnetostriction coefficient λ
₁₁₁
decrease as Gd content increases for Tb
_1-x
Gd
_x
Fe
₂
compounds. The decreasing of anisotropy results in small increase in the magnetostriction at low magnetic fields for Tb
_0.2
Gd
_0.8
Fe
₂
.