HRTEM study of new superconducting lead cuprate (Pb, Cu) (Eu, Ce)2(Eu, Sr)2Cu2Oz |
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| Authors: | Koji Yamaguchi Tsutomu Takata Kazuhiro Sakuyama Toshihiko Maeda Naoki Koshizuka H Yamauchi and Shoji Tanaka |
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| Institution: | Superconductivity Research Laboratory, International Superconductivity Technology Center, 10–13, Shinonome 1-chome, Kato-ku, Tokyo 135, Japan |
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| Abstract: | Crystallographic properties of a new lead cuprate superconducting material (Pb, Cu) (Eu, Ce)2(Eu, Sr)2Cu2Oz are examined by electron probe micro-analysis and transmission electron microscopy. It is confirmed that although the sample examined here is not of single-phase, the composition of the superconducting phase is close to the nominal composition. From TEM observations, it follows that the crystal structure of the new phase is similar to that of Tl-1222 which consists of a fluorite type block, a rock salt type layer and a perovskite block. |
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