Email this article Mechanisms of the formation of a surface phase with the matrix composition in a Ca2Nb2O7 single crystal
- Authors: Tomashpolsky Y.Y.1, Matyuk V.M.1, Sadovskaya N.V.1
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Affiliations:
- Karpov Institute of Physical Chemistry (Russian State Scientific Center)
- Issue: Vol 52, No 8 (2016)
- Pages: 791-795
- Section: Article
- URL: https://journals.rcsi.science/0020-1685/article/view/157831
- DOI: https://doi.org/10.1134/S0020168516080173
- ID: 157831
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Abstract
We have studied the local composition and nanoscale surface morphology of a calcium niobate, Сa2Nb2O7, single crystal after thermally stimulated heterosegregation with the aim of identifying the mechanisms underlying the formation of a surface phase with the matrix composition. The identity of the compositions of the surface phase and matrix is accounted for in terms of a liquid-phase model for surface segregation, which includes diffusion, melting, and crystallization processes.
About the authors
Yu. Ya. Tomashpolsky
Karpov Institute of Physical Chemistry (Russian State Scientific Center)
Author for correspondence.
Email: tomash@nifhi.ru
Russian Federation, per. Obukha 3-1/12, str. 6, Moscow, 105064
V. M. Matyuk
Karpov Institute of Physical Chemistry (Russian State Scientific Center)
Email: tomash@nifhi.ru
Russian Federation, per. Obukha 3-1/12, str. 6, Moscow, 105064
N. V. Sadovskaya
Karpov Institute of Physical Chemistry (Russian State Scientific Center)
Email: tomash@nifhi.ru
Russian Federation, per. Obukha 3-1/12, str. 6, Moscow, 105064
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