Anomalous ferromagnetic behaviour of Y₂O₃ and CuO nanoparticles in YBa₂Cu₃Oy superconductor
Anomalous ferromagnetic behaviour of the Y₂O₃ and CuO components in YBa₂Cu₃O[subscript y] (Y123) was observed after severe reduction of particle size. The particle size reduction was performed in two ways. First, Y₂O₃, BaCO₃ and CuO were ground for different times to reduce the particle size to the nanoscale. It was found that the superconducting phase could not be obtained without heat treatment, but a weak ferromagnetic behaviour of the mixture was observed at liquid and room temperatures. ...Expand abstract
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'Anomalous ferromagnetic behaviour of Y₂O₃ and CuO nanoparticles in YBa₂Cu₃O[subscript y] superconductor', E. Yanmaz, M. Basoglu & C. R. M. Grovenor, Physica Status Solidi A, 206(12), 2844-2850. Copyright © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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