Cited by 8Ferroelectric and Piezoelectric MaterialsElectronic and Structural Properties of OxidesPhotorefractive and Nonlinear Optics

Evolution of epitaxial BaTiO3 on SrTiO3-buffered Si: Phase field analysis

Li, Wente, Landis, Chad M., Demkov, Alexander A.·2022·Journal of Applied Physics

Abstract

Barium titanate (BaTiO3) is a promising candidate for electro-optical modulators in Si photonics. The BaTiO3 ferroelectric domain morphology is strongly affected by thermal, electrical, and mechanical conditions and, in turn, profoundly influences the film's optical properties. Because BaTiO3 film growth takes place at a relatively high temperature, upon cooling, the film is subject to complex thermal effects that involve changes in the crystal phase, the emergence of ferroelectricity, and variations in the strain level. We use a phase field model to describe the evolution of the BaTiO3 thin film domain morphology upon cooling from growth to room temperature. We demonstrate that cooling under different cooling scenarios results in different domain morphologies. Our simulations provide a clear temperature–strain map and thermal strategy for controllable BaTiO3 epitaxy on the SrTiO3-buffered Si substrate.

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Crossref · 10.1063/5.0111188

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Authors
Li, W., Landis, C. M., & Demkov, A. A.
Affiliations
The University of Texas at Austin (US)
Corresponding author
Demkov, Alexander A.
Venue
Journal of Applied Physics
Published
2022-12-02
Volume
132
Issue
21
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W4311117537
Cited by
8
References
60
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 1
FWCI
0.49
Type
journal article
Language
en
Open access
closed
Locations
Journal of Applied Physics (publishedVersion)
Funders
Air Force Office of Scientific Research (FA9550-18-1-0053)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
  • Physical Sciences › Materials Science › Materials Chemistry › Electronic and Structural Properties of Oxides
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
Keywords
barium titanate, epitaxial thin films, phase-field simulation, thermal strain, Si photonics, electro-optic modulator, epitaxial growth

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