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Phase Transformation in the Infinite Layer Structure Compound
(Sr, Nd) CuO2 and its Effect on Superconductivity
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ZHOU Xingjiang;YAO Yushu;LI Jianqi. XU Wei;JIA Shunlian;ZHAO Zhongxian |
National Laboratory for Superconductivity, Institute of physics, Academia Sinica, Beijing 100080
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Cite this article: |
ZHOU Xingjiang, YAO Yushu, LI Jianqi. XU Wei et al 1993 Chin. Phys. Lett. 10 503-506 |
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Abstract Superconducting compound (Sr0.86Nd0.14) CuO2 with the infinite layer structure was synthesized under high pressure. This tetragonal structure a x a transforms into a superstructure 2√2a x 2√2a when the sample was in situ heated in transmission electron microscope to about 600K. An anormalous resistance change of the sample during heating in vacuum to 400°C confirmed the phase transformation. After the superlattice formation, the sample lost its superconductivity and became semiconducting.
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Keywords:
74.70.Jm
74.70.Vy
81.30.Hd
61.16.-d
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Published: 01 August 1993
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