High dielectric constant negative-positive-zero dielectric materials based on (100 - x) (La0.1Bi0.9)Ti2O7-xSrTiO3

Atsuyuki Nakano, David P. Cann, Thomas R. Shrout

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Dielectric materials based on the solid solution system (100 - x) (La0.1Bi0.9)Ti2O7-xSrTiO3 have been studied in order to obtain high performance capacitor materials. Compositions with temperature coefficient of capacitance as low as τC < 20 ppm and dielectric constant as high as 250 make them suitable for negative-positive-zero (NPO) capacitor designated applications. Using X-ray diffraction, a three-phase mixture of the two end members, SrTiO3, (La0.1Bi0.9)Ti2O7, and a Bismuth-layer structure phase with only a limited amount of solid solution was observed. The low-temperature coefficient of capacitance was believed to be the result of the balancing of the positive and negative temperature coefficients characteristic of the three constituent phases.

Original languageEnglish (US)
Pages (from-to)1136-1140
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume36
Issue number3 SUPPL. A
DOIs
StatePublished - Mar 1997

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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