Structural and dielectric properties of BaTiO3 - BiScO 3 ceramics

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Abstract

The structural and dielectric properties of bulk (1-x) BaTiO3- x BiScO3 (x = 0 - 0.6) ceramics were investigated to acquire a better understanding of the binary system, including determination of the phase diagram, dielectric properties, and the difference in roles of Bi and BiScO 3 doping on BaTiO3. The solubility limit for BiScO 3 into the BaTiO3 perovskite structure was determined to be about x = 0.4, which was much higher than the solubility of Bi alone. A structural change from tetragonal to pseudocubic was observed at about x = 0.05 - 0.1 at room temperature. Dielectric measurements revealed the gradual change from typical ferroelectric behavior in pure BaTiO3 to a highly diffusive and dispersive relaxor behavior from 10 to 40 mol% BiScO3. Several of the compositions showed high permittivities (approximately 1000) with low temperature coefficients of capacitance.

Original languageEnglish (US)
Title of host publication17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
DOIs
StatePublished - Dec 1 2008
Event17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008 - Santa Fe, NM, United States
Duration: Feb 23 2008Feb 28 2008

Publication series

NameIEEE International Symposium on Applications of Ferroelectrics
Volume1

Other

Other17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008
CountryUnited States
CitySanta Fe, NM
Period2/23/082/28/08

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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    Ogihara, H., Randall, C. A., & Trolier-McKinstry, S. E. (2008). Structural and dielectric properties of BaTiO3 - BiScO 3 ceramics. In 17th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2008 [4693886] (IEEE International Symposium on Applications of Ferroelectrics; Vol. 1). https://doi.org/10.1109/ISAF.2008.4693886