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ＥＸＡＦＳ研究用化学方法在几种初始ｐＨ条件下制备得的Ｎｉ９３Ｐ７、Ｎｉ８６Ｐ１４、Ｎｉ８５Ｐ１５和Ｎｉ７６Ｐ２４的结构，结果表明Ｐ含量在１４％以上的Ｎｉ１００－ｘＰｘ样品为非晶结构。随着Ｐ含量的增加，Ｎｉ－Ｐ非晶合金中Ｎｉ原子第一配位壳层中，Ｎｉ配位原子数变化不大、Ｐ原子的配位数明显增加。Ｎｉ７６Ｐ２４中Ｎｉ原子的热无序σｒ和结构无序Ｎｉ分别为０．０７Ａ和０．２１Ａ，且σｒ，三倍于σｒ，其σｓ比Ｎｉ８６Ｐ１４的σｓ大一倍左右，结构无序σｓ的增加表明Ｎｉ配位原子分布在偏离平均配位距离的更大范围。
EXAFS studies the chemical structure of Ni93P7, Ni86P14, Ni85P15 and Ni76P24 prepared at several initial pH conditions. The results show that Ni100-xPx samples with P content above 14% have amorphous structure. With the increase of P content, Ni atoms in the first coordination shell of Ni-P amorphous alloy in Ni-P amorphous alloy did not change much, and the coordination number of P atoms increased obviously. The thermal disordered σr and the structured disordered Ni of Ni atom in Ni76P24 are 0.07A and 0.21A, respectively, and σr is three times of σr, and the σs is about twice larger than the σs of Ni86P14. The increase of structural disorder σs indicates Ni coordination atoms are distributed in a wider range than the average coordination distance.