Soft modes behavior in bilayer (Ba,Sr)TiO3/(Ba,Sr)TiO3 heterostructures

We studied the bilayer heterostructures with the different consequence of the Ba 0.4 Sr 0.6 TiO 3 and Ba 0.8 Sr 0.2 TiO 3 layers grown on the single-crystal MgO and Si substrates. The thermodynamic theory for the heterostructures was developed. Based on the experimental data, we determined the therm...

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Bibliographic Details
Published in:	Ferroelectrics Vol. 567; no. 1; pp. 102 - 112
Main Authors:	Shirokov, V. B., Razumnaya, A. G.
Format:	Journal Article
Language:	English
Published:	Philadelphia Taylor & Francis 25-10-2020 Taylor & Francis Ltd
Subjects:	Barium Heterostructures Parameters phase transitions Silicon substrates Single crystals soft mode Strontium Temperature dependence thermodynamic theory Thin films
Online Access:	Get full text
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Summary:	We studied the bilayer heterostructures with the different consequence of the Ba 0.4 Sr 0.6 TiO 3 and Ba 0.8 Sr 0.2 TiO 3 layers grown on the single-crystal MgO and Si substrates. The thermodynamic theory for the heterostructures was developed. Based on the experimental data, we determined the thermal deformation parameters in the Ba 0.4 Sr 0.6 TiO 3 and Ba 0.8 Sr 0.2 TiO 3 layers, forming the bilayer structures. These parameters are used to plot the temperature dependence of the soft modes in each layer.
ISSN:	0015-0193 1563-5112
DOI:	10.1080/00150193.2020.1791593