Influence of uniaxial stress on the ferroelectric-to-paraelectric phase change in barium titanate

Journal article


Publication Details

Author(s): Schader FH, Aulbach E, Webber K, Rossetti GA
Journal: Journal of Applied Physics
Publisher: American Institute of Physics (AIP)
Publication year: 2013
Volume: 113
ISSN: 0021-8979


Abstract


The dielectric behavior near the ferroelectric-to-paraelectric phase transition of < 001 >(C)-oriented single crystal and polycrystalline barium titanate (BaTiO3) was investigated as a function of uniaxial compressive stress in the temperature range from 25 to 200 degrees C. An increase in the Curie point (T-C) and decrease in the Curie-Weiss temperature (theta) were observed with increasing stress for both single crystal and polycrystalline samples, resulting in an increase in the first order nature of the phase transition as measured by the temperature difference (T-C - theta). With increasing applied stress levels, the permittivity versus temperature curves of polycrystalline samples were found to broaden and flatten near the Curie point, which was not observed for the single crystals. The experimental results were analyzed using a classical 2-4-6 Landau polynomial. The observed increase in the first order nature of the ferroelectric-to-paraelectric phase transition with uniaxial stress was explained by a linear dependence of the quartic coefficient of the Landau series on stress. (C) 2013 American Institute of Physics.



FAU Authors / FAU Editors

Webber, Kyle Prof.
Professur für Werkstoffwissenschaften (Funktionskeramik)


How to cite

APA:
Schader, F.H., Aulbach, E., Webber, K., & Rossetti, G.A. (2013). Influence of uniaxial stress on the ferroelectric-to-paraelectric phase change in barium titanate. Journal of Applied Physics, 113. https://dx.doi.org/10.1063/1.4799581

MLA:
Schader, Florian H., et al. "Influence of uniaxial stress on the ferroelectric-to-paraelectric phase change in barium titanate." Journal of Applied Physics 113 (2013).

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Last updated on 2018-19-04 at 03:06