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Microwave conductivity of powdered unaligned YBa2Cu3O7−δ

✍ Scribed by H.-M. Cheah; A. Porch; J.R. Waldram

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
311 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

We report detailed results on the complex conductivity of YBCO powder at 5GHz, including the normal state conductivity. critical point behaviour, abnormal behaviour at low temperatures and departures from BCS theory at intermediate temperatures. We also discuss a size dependence in our results which may be associated with the removal of defects in the grinding process.

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Microwave properties of YBa2Cu3O7−δ/PrBa
Microwave properties of YBa2Cu3O7−δ/PrBa2Cu3O7−δ superlattices
✍ W.E. Carlos; R. Kaplan; D.H. Lowndes; D.P. Norton 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 612 KB

We have used non-resonant microwave absorption to study c-axis YBazCuaO7\_6/PrBa2Cu307\_ 6 superlanices and compare the response to a film of similarly grown YBa2Cu307\_~ (YBCO). Near the respective transition temperatures, the response of the supedattice samples and the YBCO film have similar ampli