Critical Current Densities of Isolated Grain Boundaries in Coated Conductors

Weigand, M
Speller, S
Rutter, NA
Hughes, GM
Grovenor, C
Durrell, JH

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Publication date

June 2009

DOI

10.1109/TASC.2009.2019667

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Journal

IEEE Transactions on Applied Superconductivity

Abstract

We report on a new technique to isolate grain boundaries (GBs) and single grains in YBa2Cu3O7-δ coated conductors using a focused ion beam microscope. The critical current density Jc of a GB measured for magnetic fields applied perpendicular to the film surface showed hysteretic behavior. For fields applied in-plane a very different angular dependence of Jc was found for a bridge patterned across a GB and a second one placed within a grain. © 2009 IEEE

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Critical Current Densities of Isolated Grain Boundaries in Coated Conductors

Abstract

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Critical Current Densities of Isolated Grain Boundaries in Coated Conductors

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