Dielectric nonlinearity and polarization anharmonicity of BaTiO3

Y. L. Wang, A. K. Tagantsev, D. Damjanovic, N. Setter, V. K. Yarmarkin, A. I. Sokolov, I. A. Lukyanchuk

Research outputpeer-review

Abstract

By analyzing Landau's phenomenologieal thermodynamic potential, we propose a few ways to assess the importance of eighth-power terms and to verify the temperature dependence of the anharmonic coefficients. It is demonstrated that the eighth-power terms should be substantially involved for the adequate description of the thermodynamic behavior of BaTiO3 around the cubic-tetragonal phase transition. In addition, the temperature dependence of the anharmonic coefficients (at least of the quartic coefficients) is experimentally evidenced to be essential. Both necessities attest to the anomalously strong anharmonicity of this substance.

Original languageEnglish
Title of host publication2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF
DOIs
Publication statusPublished - 1 Dec 2006
Event2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF - Sunset Beach, NC
Duration: 30 Jul 20063 Aug 2006

Conference

Conference2006 15th IEEE International Symposium on Applications of Ferroelectrics, ISAF
CountryUnited States
CitySunset Beach, NC
Period30/07/063/08/06

Scopus subject areas

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

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