The Effect of Ca2PbO4 Addition on Superconductivity in a Bi-Sr-Cu-O System
The Effect of Ca2PbO4 Addition on Superconductivity in a Bi-Sr-Cu-O System
复制标题
Ca2PbO4 添加对 Bi-Sr-Cu-O 体系超导性的影响
DOI：
10.1143/jjap.28.l75
复制
发表时间：
1989
影响因子：
1.5
通讯作者：
K. Niwa
中科院分区：
文献类型：
--
作者：
T. Uzumaki;K. Yamanaka;N. Kamehara;K. Niwa
研究了Ca_2 PbO_4对Bi-Sr-Cu-O体系超导电性的影响。根据粉末X射线衍射和显微拉曼散射，我们确定在低于750°C的温度下Bi-Pb-Sr-Ca-Cu-O中形成Ca 2 PbO 4。在Bi-Sr-Cu-O体系中加入Ca_2PbO_4，可得到高Tc相。高Tc相的合成过程似乎是基于低Tc结构与液相中的Ca 2+之间的反应，该反应是由Ca 2 PbO 4在822°C下分解引起的。
We examined the effect of Ca2PbO4 addition on superconductivity in a Bi-Sr-Cu-O system. We determined that Ca2PbO4 is formed in Bi-Pb-Sr-Ca-Cu-O at temperatures lower than 750°C on the basis of powder X-ray diffraction and micro-Raman scattering. A high-Tc phase was synthesized by adding Ca2PbO4 to the Bi-Sr-Cu-O system which has a single CuO layer. It seems that the synthesis process of the high-Tc phase is based on a reaction between the low-Tc structure and Ca2+ in the liquid phase which is caused by decomposition of Ca2PbO4 at 822°C.