Study of microwave power absorption in yttrium-barium-copper based high-temperature superconductors and allied compounds
- 1 June 1989
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 2 (1), 29-34
- https://doi.org/10.1088/0953-2048/2/1/007
Abstract
Microwave absorption has been used to study the electromagnetic properties of the yttrium-barium-copper-oxide superconductor and other compounds in this phase system. The method can discriminate between superconductivity and metal-insulator and ferroelectric transitions in milligram size samples of powder. The transition that has been reported to occur near 240 K in several physical properties of samples of the high-temperature superconductor YBa2Cu3O7 is shown to be not an intrinsic property of this material but to be associated with impurity phases or interfaces.Keywords
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