摘要
以CuF_2为配方试剂之一,合成系列掺F稀土超导体RBa_2Cu_2O_xF_y。对比观测发现,稀土氧化物超导体以F代O后,烧结温度明显降低,超导转变宽度变窄,零电阻温度稍有提高,晶胞参数发生变化,F进入123相晶格,文中还讨论掺F效应。
A series of F-doped rare-earth superconductors RBa2Cu3OxFy were synthesized with CuF2 as one of the reactants. According to comparative experiments. It was found that sintering temperature was lowered, transition width was narrowed, the zero resistance temperature was raised to some degree, and lattice parameters was changed, as the oxygen was substituted by fluorine. It was proved that the fluorine had entered into 123 supercoductive phase lattice. The effect of fluorine on superconductivity was also discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第5期851-860,共10页
Acta Physica Sinica
