Development of Low Cost (Sr,Ca)3Al2O6 Dielectrics for Bi2Sr2CaCu2O8+delta Applications

Abstract

Aspects of the development of low-cost (Sr,Ca)3Al2O6 dialectics for Bi2Sr2CaCu2O8+δ superconductor applications were investigated. A tie-line phase equilibrium relationship between Bi2Sr2CaCu2O8+δ and Sr2CaAl2O6 compositions was observed at 860 C. When the Bi-2212 and (Sr,Ca)3Al2O6 solid-solution compositions were changed slightly, the tie-line relationship was not preserved, and a new phase was observed to form with composition ^ BiSr1.5Ca0.5Al2Ox. Composites of (0 to 24) volume fraction % Sr2CaAl2O6 + Bi2Sr2CaCu2O8+δ equilibrated at 860 C slightly reduced the Tc (by 2 K to 4 K) and superconducting volume percentage of the 2212 phase.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2003
Accession Number
ADA418698

Entities

People

  • Henrietta J. Brown
  • Lawrence P. Cook
  • Richard G. Geyer
  • Timothy J. Haugan
  • Winnie Wong-ng

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Chemical Reactions
  • Composite Materials
  • Crystal Structure
  • Crystals
  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Electronic Mail
  • Films
  • Materials
  • Measurement
  • Solid Solutions
  • Superconductors
  • Thick Films
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Superconducting Magnet Technology