Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina

K. C. Goretta, M. M. Cuber, L. R. Feng, B. L. Fisher, Ming Jiang, M. T. Lanagan, U. Balachandran, Ming Xu

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4 Scopus citations


Al2O3 particles =30 nm in size were added to Bi2Sr2CaCu2Ox in a 1:4 molar ratio. For comparison, 0.3- and -3- im AI2O3 particles were added to separate batches. All of the materials were partial-melt processed. The A12O3 reacted during melting to form stable compounds, primarily of approximate composition (Sr,Ca)2A 1 O 4. All additions caused slight decreases in the Tc and melting point of the Bi2Sr2CaCu2Ox. The submicrometer AljOj additions induced large expansions in magnetic-hysteresis width at 6 K. Electron microscopy examination strongly suggested that the hysteresis expansion was related to alloying of the Bi2Sr2CaCu2Ox matrix rather than to pinning by volume defects.

Original languageEnglish (US)
Pages (from-to)1896-1899
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART 2
StatePublished - 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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