The Mssbauer Effect of Y-Ba-Cu-Fe-O Superconductive Oxide
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1989年第6期
论文作者：夏思科 马如璋 曹国辉 李正文 冯永荣
文章页码：434 - 436
摘 要：<正> We have studied the Mossbauer effect ofYBa2Cu2.88Fe0.12O7-x superconductive oxide from78 to 273K. Two minima of recoilless fractionand Debye temperature were found near 110K and220K. It means that lattice softening happenednear these two temperatures. We also observedminima of isomer shift near 110K and quadrupolesplitting increase when temperature is lowerthan 110K. We suggest that lattice softeningwould lead to the displacement of oxygen atoms.This may be relative to superconductivetransition.
夏思科，马如璋，曹国辉，李正文，冯永荣
摘 要：<正> We have studied the Mossbauer effect ofYBa2Cu2.88Fe0.12O7-x superconductive oxide from78 to 273K. Two minima of recoilless fractionand Debye temperature were found near 110K and220K. It means that lattice softening happenednear these two temperatures. We also observedminima of isomer shift near 110K and quadrupolesplitting increase when temperature is lowerthan 110K. We suggest that lattice softeningwould lead to the displacement of oxygen atoms.This may be relative to superconductivetransition.
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