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

Saj Mohan Mohandas Moolayil; R. Ramadurai

doi:10.1063/1.5028874

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

Saj Mohan Mohandas Moolayil, R. Ramadurai^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › Academic › peer-review

3 Citations (Scopus)

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

Original language	English
Article number	080040
Journal	AIP Conference Proceedings
Volume	1942
DOIs	https://doi.org/10.1063/1.5028874
Publication status	Published - 2018
Externally published	Yes

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10.1063/1.5028874

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@article{4436c0ea15214aa9b995679e6f9bee24,

title = "Template assisted strain tuning and phase stabilization in epitaxial BiFeO3 thin films",

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",

author = "{Mohandas Moolayil}, {Saj Mohan} and R. Ramadurai",

year = "2018",

doi = "10.1063/1.5028874",

language = "English",

volume = "1942",

journal = "AIP Conference Proceedings",

issn = "0094-243X",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Template assisted strain tuning and phase stabilization in epitaxial BiFeO3 thin films

AU - Mohandas Moolayil, Saj Mohan

AU - Ramadurai, R.

PY - 2018

Y1 - 2018

N2 - 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

AB - 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

UR - http://dx.doi.org/10.1063/1.5028874

U2 - 10.1063/1.5028874

DO - 10.1063/1.5028874

M3 - Conference article

SN - 0094-243X

VL - 1942

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

M1 - 080040

ER -

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

Abstract

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