Pressure tuned ferroelectric reentrance in nano-BaTiO3 ceramics

J. L. Zhu, S. Lin, S. M. Feng, L. J. Wang, Q. Q. Liu, C. Q. Jin, X. H. Wang, C. F. Zhong, L. T. Li, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In nano-grain BaTiO3 ceramics, internal compressive stresses make the cubic phase more stable, while internal shear stresses stabilize rhombohedral and orthorhombic phases. The competition between internal compressive stresses and internal shear stresses gives a ferroelectric to paraelectric to ferroelectric reentrance phenomenon as a function of grain size. The pressure can be a tuning factor of reentrance behavior by controlling the interactions between external hydrostatic pressure and internal compressive stresses. These experimental phenomena can be well described by a modified Ginzburg-Landau-Devonshire thermodynamic theory.

Original languageEnglish (US)
Article number124107
JournalJournal of Applied Physics
Volume112
Issue number12
DOIs
StatePublished - Dec 1 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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