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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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YBa_2Cu__(3-x)Sn_xO_(7-y)体系的Mossbauer效应研究
, PP. 142-146
Keywords: Y-Ba-Cu-O体系,Mossbauer谱,超导转变温度,替代
Abstract:
通过透射Mossbauer谱的测量,确定了高温超导体YBa_?Cu_(3-x)Sn_xO_(7-y)体系中(x=0.05,0.10,0.20,0.30,0.40),掺入的Sn以Sn~(4+)离子的形式存在,并在体系中分别占据着Cu(Ⅰ)和Cu(Ⅱ)两种位置,二者位置的相对比例随Sn的掺入量(x)而变化,超导转变温度(T_c)的测量表明,少量Sn的掺入使T_c略有降低。
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