【摘要】 本文用穆斯堡尔效应研究了Fe_1·xV_x（0<x<0.843）合金中⁵⁷Fe的超精细参数—同质异能移位,电四极分裂和磁超精细场,并且讨论了合金中V原子对超精细参数的影响。更多还原

【Abstract】 The hyperfine parameters for 67Fe in Fe1 -xVx(0≤x≤0.843) alloy systems have been studied by means of Mossbauer spectroscopy. For x<<<<<<<<<<< 0.1 the hyperfine field Hhf(n, x) and the isomer shift IS(n, x) on Fe site with the number of V atoms in the vicinity of the Fe nuclein and V concentration x can be described by the following equations;Where △Hhf and △IS, the change in the hyperfine field and isomer shift found per one V atom in the neighbour shell, are 24.5kOe and 0.016 mm/s, respectively. These expression indicate that the influence of V atoms on the hyperfine field and isomer shift can be divided into two parts: short range effect and long range effect. The former, the effect of the neighboured V atoms, is additive. The later is attributed to the expansion of lattice. In the Fe1-xVx(0≤x≤0.843) alloys the hyperfine field distributions and the average value of hyperfine field and isomer shift are obtained. The average isomer shift as a function of V concen- tration x can be written as follow,IS= -0.19xThe hyperfine field distributions show that two state of Fe atoms seem to exist in the Fe1-xVx alloys for x≥0.5.更多还原