Grain orientation and electrical properties of Sr2Nb2O7 ceramics

Mikio Fukuhara, Chi Yuen Huang, A. S. Bhalla, R. E. Newnham

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Abstract

Sr2Nb2O7 ceramics sintered at 1753 K and the hot-pressed compacts annealed at 1073 K possess low density because of the formation of voids by large expansion. The expansion is attributed to cleavage and due to the preferential grain growth along the <010> direction. An increase in dielectric constant at temperatures over 973 K and a parabolic decrease of resistivity with increasing temperature are observed. The constant variation corresponds well to the decrease in thermal strain and the grain orientation factor along the <0 K0> direction.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalJournal of Materials Science
Volume26
Issue number1
DOIs
Publication statusPublished - 1991 Jan 1

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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