Stabilization of the low temperature coefficient of dielectric constant of Ca5Nb2TiO12 by Zr doping

R. J. Cava, J. J. Krajewski

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The effects of small amounts of Zr substitution for Ti in the low loss, low temperature coefficient dielectric material Ca5Nb2TiO12 are reported. Substitutions at the 1-5% level significantly increase the range of possible firing temperatures at which polycrystalline ceramics with low temperature coefficients can be obtained. This low temperature coefficient state is at the borderline between ordered and disordered states of the Ca, Nb, and Ti ions in the B sites of the perovskite lattice. The kinetics for ordering is apparently enhanced by the Zr substitutions.

Original languageEnglish (US)
Pages (from-to)1817-1824
Number of pages8
JournalMaterials Research Bulletin
Issue number12
StatePublished - 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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