ANOMALOUS BEHAVIOR ABOVE T<sub>c</sub> AND 90K SUPERCONDUCTIVITY IN <font>YBa</font><sub>2</sub><font>Cu</font><sub>3</sub>O<sub>x</sub>
Xiaohua ChengInstitute of Solid State Physics, Nanjing University, Nanjing, P. R. ChinaSUN LINHAIInstitute of Solid State Physics, Nanjing University, Nanjing, P. R. ChinaWANG YENINGInstitute of Solid State Physics, Nanjing University, Nanjing, P. R. ChinaShen HuiminInstitute of Solid State Physics, Nanjing University, Nanjing, P. R. ChinaYu ZhengInstitute of Solid State Physics, Nanjing University, Nanjing, P. R. China
1988en
ABI
Аннотация
Internal friction and lattice parameter were measured by Marx’s three components oscillator and X-ray polycrystalline diffraction respectively. As a function of temperature, there exist a few anomalies above T c , of which the 110K-130K anomaly is found to be closely connected with 90K superconducting transition, but no obvious relation was observed for the 210K anomaly. In addition, a relaxation type internal friction peak was measured at about 100K.
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