Direct Observation of Long-Term Durability of Superconductivity in YBa$_2$Cu$_3$O$_7$-Ag$_2$O Composites

Juhn-Jong Lin; Yong-Han Lin; Shiu-Ming Huang; Tsang-Chou Lee; Teng-Ming Chen

doi:10.1143/jjap.42.6415

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Direct Observation of Long-Term Durability of Superconductivity in YBa$_2$Cu$_3$O$_7$-Ag$_2$O Composites

Juhn-Jong Lin·Yong-Han Lin·Shiu-Ming Huang·Tsang-Chou Lee·Teng-Ming Chen

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Abstract

We report direct observation of long-term durability of superconductivity of several YBa$_2$Cu$_3$O$_7$-Ag$_2$O composites that were first prepared and studied almost 14 years ago [J. J. Lin {\it et al}., Jpn. J. Appl. Phys. {\bf 29}, 497 (1990)]. Remeasurements performed recently on both resistances and magnetizations indicate a sharp critical transition temperature at 91 K. We also find that such long-term environmental stability of high-temperature superconductivity can only be achieved in YBa$_2$Cu$_3$O$_7$ with Ag$_2$O addition, but not with pure Ag addition.

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Juhn-Jong Lin, Yong-Han Lin, Shiu-Ming Huang, Tsang-Chou Lee, Teng-Ming Chen. 2003-07-09. Direct Observation of Long-Term Durability of Superconductivity in YBa$_2$Cu$_3$O$_7$-Ag$_2$O Composites. https://doi.org/10.1143/jjap.42.6415

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