Prediction of ferroelectricity in BaTiO3∕SrTiO3 superlattices with domains
Autor: | D. G. Schlom, Sy Y. Hu, Arsen Soukiassian, Avadh Saxena, C. B. Eom, Y. L. Li, Q. X. Jia, Kj J. Choi, Dmitri A. Tenne, Turab Lookman, X. X. Xi, L.Q. Chen |
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Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Applied Physics Letters. 91:112914 |
ISSN: | 1077-3118 0003-6951 |
Popis: | The phase transitions of superlattices into single- and multidomain states were studied using a mesoscale phase-field model incorporating structural inhomogeneity, micromechanics, and electrostatics. While the predictions of transition temperatures of BaTiO3∕SrTiO3 superlattices into multidomains show remarkably good, quantitative agreement with ultraviolet Raman spectroscopic and variable-temperature x-ray diffraction measurements, the single-domain assumption breaks down for superlattices in which the nonferroelectric layer thickness exceeds the characteristic domain size in the ferroelectric layers. |
Databáze: | OpenAIRE |
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