Microstructural development and superconducting properties of BaO2-added Bi2Sr2CaCu2O8+x

Ulf P. Trociewitz, Peter R. Sahm, Rachel E. Koritala, Luiz Brandao, Cristiane Bacaltchuk, Justin Schwartz

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1 Scopus citations


Investigations on the effect of Ba additions in Bi-2212 superconductors are focussed on compositional, microstructural, and magnetization studies. In previous studies, we showed that BaO2 reacts with Bi-2212 to form second phases. Zero-field and in-field transport properties in Ag-clad BaO2 added Bi-2212 tapes had been improved at 4.2 K [1]-[3]. SEM micrographs, pole figures, and transport critical currents versus magnetic field orientation suggest that BaO2 has a strong influence on the microstructural properties. Magnetization studies revealed that BaO2 does not affect the pinning properties of optimally added Bi-2212. To estimate the potential of BaO2 additions in creating possible pinning sites, TEM investigations were carried out focussing on sub-micrometer inclusions and growth defects in the superconducting phase.

Original languageEnglish (US)
Pages (from-to)3054-3057
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1 III
StatePublished - Mar 2001
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: Sep 17 2000Sep 22 2000

All Science Journal Classification (ASJC) codes

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


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