Formation and magnetic properties of the Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds have been investigated.It has been found that formation of single phase compounds Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) with Nd_(3)(Fe,Ti)_(29)-...Formation and magnetic properties of the Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds have been investigated.It has been found that formation of single phase compounds Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) with Nd_(3)(Fe,Ti)_(29)-type structure depends strongly on the content of stabilizing element Cr,and the solid-solution limit of Co in Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds increases with Cr content.Pure Co-based Gd_(3)Co_(29-y)Cr_(y) compounds with Nd_(3)(Fe,Ti)_(29)-type structure have been successfully synthesized with y=6.5 and 7.0.The Curie temperature Tc of Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds increases with increasing Co content x at fixed y,whereas increase of the Cr content leads to an obvious decrease of Tc of the Gd_(3)Co_(29-y)Cr_(y) compounds.Composition dependence of the saturation magnetization at 5 K reaches a maximum around x=7.5 and y=4.It is worth noting that substitution of Co for Fe results in a significant change of magnetocrystalline anisotropy of the Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds and changes the easy magnetization direction from basal-plane to easy-axis when x>10 and y=4.展开更多
基金Supported by the National Natural Science Foundation of China under Grand No.58971061.
文摘Formation and magnetic properties of the Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds have been investigated.It has been found that formation of single phase compounds Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) with Nd_(3)(Fe,Ti)_(29)-type structure depends strongly on the content of stabilizing element Cr,and the solid-solution limit of Co in Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds increases with Cr content.Pure Co-based Gd_(3)Co_(29-y)Cr_(y) compounds with Nd_(3)(Fe,Ti)_(29)-type structure have been successfully synthesized with y=6.5 and 7.0.The Curie temperature Tc of Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds increases with increasing Co content x at fixed y,whereas increase of the Cr content leads to an obvious decrease of Tc of the Gd_(3)Co_(29-y)Cr_(y) compounds.Composition dependence of the saturation magnetization at 5 K reaches a maximum around x=7.5 and y=4.It is worth noting that substitution of Co for Fe results in a significant change of magnetocrystalline anisotropy of the Gd_(3)Fe_(29-x-y)Co_(x)Cr_(y) compounds and changes the easy magnetization direction from basal-plane to easy-axis when x>10 and y=4.
