Flux Pinning by Perovskite Type Impurities in YBa2Cu3O6+x
In order to improve the critical currrent density of YBa2Cu3O6+x , a total of nine perovskite-type impurities were examined. As a result, only two phases of BaSnO3 and BaZrO3 were stable in the host. TEM observation showed a homogeneous distribution of fine particles semicoherently in the matrix. Very high intragrain critical current density was observed for the specimens with BaSnO3, BaZrO3 and SrZrO3 additions.
KeywordsCritical Current Density Transmission Electron Microscope Observation Scanning Electron Microscope Photo Magnetic Field Dependence Flux Pinning
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