Diffusive behavior of a surface layer in BaTiO3 crystals grown by Remeika method

Evgeniy Dul'kin; Michael Roth

doi:10.1051/epjap/2014140220

Diffusive behavior of a surface layer in BaTiO₃ crystals grown by Remeika method

The Institute of Applied Physics

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Abstract

BaTiO₃ crystals, grown by Remeika method, were studied by means of acoustic emission and dielectric response. It is established, that the phase transition in the surface layer occurs on 13°C below in comparing with the crystals bulk. It is observed, that the imaginary dielectric response of a crystal surface layer exhibits an essential smearing and slight frequency shift to higher temperatures. Reasons of such properties are discussed from a viewpoint of diffusive phase transition, taking place in the surface layer, enriched by K⁺ ions from KF flux.

Original language	English
Article number	31301
Journal	EPJ Applied Physics
Volume	68
Issue number	3
DOIs	https://doi.org/10.1051/epjap/2014140220
State	Published - 1 Dec 2014

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© EDP Sciences 2014.

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abstract = "BaTiO3 crystals, grown by Remeika method, were studied by means of acoustic emission and dielectric response. It is established, that the phase transition in the surface layer occurs on 13°C below in comparing with the crystals bulk. It is observed, that the imaginary dielectric response of a crystal surface layer exhibits an essential smearing and slight frequency shift to higher temperatures. Reasons of such properties are discussed from a viewpoint of diffusive phase transition, taking place in the surface layer, enriched by K+ ions from KF flux.",

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AB - BaTiO3 crystals, grown by Remeika method, were studied by means of acoustic emission and dielectric response. It is established, that the phase transition in the surface layer occurs on 13°C below in comparing with the crystals bulk. It is observed, that the imaginary dielectric response of a crystal surface layer exhibits an essential smearing and slight frequency shift to higher temperatures. Reasons of such properties are discussed from a viewpoint of diffusive phase transition, taking place in the surface layer, enriched by K+ ions from KF flux.

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Diffusive behavior of a surface layer in BaTiO₃ crystals grown by Remeika method

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