利用Mossbauer谱、磁测量技术,X射线衍射以及二次离子质谱分析(SIMS)技术,对三元非晶合金Fe_(90-x)V_xZr_(10)吸氢现象及磁性变化进行了研究.实验结果表明:随充氢时间(相同的充氢电流密度)的增加,非晶态合金同质异能移位增加,表明充氢后Fe核处电子密度发生变化.随充氢量增加,室温下合金由顺磁状态转变为铁磁状态,超精细分布逐渐展宽,其最大值也向高场方向移动.吸氢后合金原子磁矩及Curie温度T_C有大幅度增加.0K时饱和磁化强度从未充氢合金的120emu/g增加到174emu/g.Curie温度T_C从257K增加到384K.吸氢导致磁性变化的机理,利用杂化理论模型能够给出很好的解释.
The amorphous Fe_(90-x)V_xZr_(10) alloy after electrolytic hydrogenation pro-cedure was studied by means of Mossbauer effect, magnetic measuement, X-ray dif-fraction and second ion mass spectroscopy (SIMS) techniques. The experimental re-sults show that the magnetic properties of amorphous Fe_(90-x)V_xZr_(10) alloy are highlysensitive to presence of hydrogen. The isomer shift (IS) has a small positive changeand the magnetic properties transfer from paramagnetic to ferromagnetic state byhydrogenation. The effect of hydrogen absorption is also to raise Fe magnetic mo-ment and Curie temperature T_C from 257 to 384 K. Finally, the considerable in-crease of magnetic properties of amorphous Fe_(90-x)V_xZr_(10) alloy by hydrogenation is at-tributable to the change of hydridization effect between outer electrons of Zr atomsand 3d-electrons of Fe atoms. It may be concluded that the hydrogen atoms is loca-lized around Zr atoms when hydrogen atoms enter inside of alloy.
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