Template assisted strain tuning and phase stabilization in epitaxial BiFeO3 thin films

M., Saj Mohan M and Ramadurai, Ranjit (2018) Template assisted strain tuning and phase stabilization in epitaxial BiFeO3 thin films. In: AIP Conference Proceedings 1942.

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Abstract

Strain engineering is a key to develop novel properties in functional materials. We report a strain mediated phase stabilization and epitaxial growth of bismuth ferrite(BiFeO3) thin films on LaAlO3 (LAO) substrates. The strain in the epitaxial layer is controlled by controlling the thickness of bottom electrode where the thickness of the BFO is kept constant. The thickness of La0.7Sr0.3MnO3(LSMO) template layer was optimized to grow completely strained tetragonal, tetragonal/rhombohedral mixed phase and fully relaxed rhombohedral phase of BFO layers. The results were confirmed with coupled-θ-2θ scan, and small area reciprocal space mapping. The piezoelectric d33 (˜ 45-48 pm/V) coefficient of the mixed phase was relatively larger than the strained tetragonal and relaxed rhombohedral phase for a given thickness.

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IITH Creators:
IITH CreatorsORCiD
Ramadurai, Ranjithttp://orcid.org/0000-0003-2991-0027
Item Type: Conference or Workshop Item (Paper)
Subjects: Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Depositing User: Team Library
Date Deposited: 07 May 2019 10:48
Last Modified: 07 May 2019 10:48
URI: http://raiith.iith.ac.in/id/eprint/5072
Publisher URL: http://doi.org/10.1063/1.5028874
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