Vacancy ordering in Fe7Se8-Fe7S8 solid solutions studied by Mössbauer, X-ray and magnetization techniques
Vacancy ordering in Fe7Se8-Fe7S8 solid solutions studied by Mössbauer, X-ray and magnetization techniques
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通过穆斯堡尔、X 射线和磁化技术研究 Fe7Se8-Fe7S8 固溶体中的空位有序性
DOI:
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发表时间:
1994
期刊:
影响因子:
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通讯作者:
P. Nordblad
中科院分区:
文献类型:
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作者:
T. Ericsson;Ö. Amcoff;P. Nordblad
Superstructures, due to cation vacancy ordering, form in the NiAs-related pseudobinary solid solution Fe7Se8-Fe7S8 close to both end compositions (Fe7(SxSe1−x)8 withx≤0.15 andx≥0.85) during rapid cooling of quartz ampoules from 600 °C, according to X-ray diffractometry (XRD) and magnetization (SQUID) measurements. Mössbauer spectroscopy indicates local vacancy ordering in the whole interval, but XRD and SQUID data exclude long-range vacancy ordering when the anion proportion of sulphur is between 15% and 85%.