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Frequency and field dependence of the irreversibility line in a YBa2Cu3O7−δ film

✍ Scribed by J.H.P.M. Emmen; G.M. Stollman; W.J.M. De Jonge

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
444 KB
Volume
169
Category
Article
ISSN
0921-4534

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✍ T. Ishida; K. Okuda; K. Hirata; H.P. Lang; H.-J. Güntherodt 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 678 KB

We have investigated the effect of screw dislocations on the irreversibility lines of Y-Ba-Cu-O films. The density n~ of screw dislocations is controlled between 2.0 × 1013 and 7.9 x 1013 m -2 by a subtle change in stoichiometry. We employ a nonlinearity criterion using the harmonic susceptibility t