Probing domain microstructure in ferroelectric Bi4Ti3O12 thin films by optical second harmonic generation

Yaniv Barad; James Lettieri; Chris D. Theis; Darrell G. Schlom; Venkatraman Gopalan; J. C. Jiang; X. Q. Pan

doi:10.1063/1.1334641

Probing domain microstructure in ferroelectric Bi₄Ti₃O₁₂ thin films by optical second harmonic generation

Yaniv Barad, James Lettieri, Chris D. Theis, Darrell G. Schlom, Venkatraman Gopalan, J. C. Jiang, X. Q. Pan

Research output: Contribution to journal › Article › peer-review

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Abstract

The domain microstructure in an epitaxial thin film of Bi₄Ti₃O₁₂ on a SrTiO₃(001) substrate is studied by second harmonic generation measurements. The input polarization dependence of the second harmonic signal exhibits spatial symmetries that reflect the presence of eight different domain variants present in the film. A theoretical model is presented that explains the observed symmetries and extracts quantitative information on the nonlinear optical coefficients of the material and statistics of domain variants present in the film area being probed. The following ratios of nonlinear coefficients and birefringence was determined: d₁₂/d₁₁= - 3.498±0.171, |d₂₆/d₁₂\ = 0.365±0.010, \d₂₆/d₁₁| = 1.273±0.036, and \n_b-n_a = 0.101±0.018 (at 532 nm).

Original language	English (US)
Pages (from-to)	1387-1392
Number of pages	6
Journal	Journal of Applied Physics
Volume	89
Issue number	2
DOIs	https://doi.org/10.1063/1.1334641
State	Published - Jan 15 2001

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.1334641

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title = "Probing domain microstructure in ferroelectric Bi4Ti3O12 thin films by optical second harmonic generation",

abstract = "The domain microstructure in an epitaxial thin film of Bi4Ti3O12 on a SrTiO3(001) substrate is studied by second harmonic generation measurements. The input polarization dependence of the second harmonic signal exhibits spatial symmetries that reflect the presence of eight different domain variants present in the film. A theoretical model is presented that explains the observed symmetries and extracts quantitative information on the nonlinear optical coefficients of the material and statistics of domain variants present in the film area being probed. The following ratios of nonlinear coefficients and birefringence was determined: d12/d11= - 3.498±0.171, |d26/d12\ = 0.365±0.010, \d26/d11| = 1.273±0.036, and \nb-na = 0.101±0.018 (at 532 nm).",

author = "Yaniv Barad and James Lettieri and Theis, {Chris D.} and Schlom, {Darrell G.} and Venkatraman Gopalan and Jiang, {J. C.} and Pan, {X. Q.}",

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T1 - Probing domain microstructure in ferroelectric Bi4Ti3O12 thin films by optical second harmonic generation

AU - Barad, Yaniv

AU - Lettieri, James

AU - Theis, Chris D.

AU - Schlom, Darrell G.

AU - Gopalan, Venkatraman

AU - Jiang, J. C.

AU - Pan, X. Q.

PY - 2001/1/15

Y1 - 2001/1/15

N2 - The domain microstructure in an epitaxial thin film of Bi4Ti3O12 on a SrTiO3(001) substrate is studied by second harmonic generation measurements. The input polarization dependence of the second harmonic signal exhibits spatial symmetries that reflect the presence of eight different domain variants present in the film. A theoretical model is presented that explains the observed symmetries and extracts quantitative information on the nonlinear optical coefficients of the material and statistics of domain variants present in the film area being probed. The following ratios of nonlinear coefficients and birefringence was determined: d12/d11= - 3.498±0.171, |d26/d12\ = 0.365±0.010, \d26/d11| = 1.273±0.036, and \nb-na = 0.101±0.018 (at 532 nm).

AB - The domain microstructure in an epitaxial thin film of Bi4Ti3O12 on a SrTiO3(001) substrate is studied by second harmonic generation measurements. The input polarization dependence of the second harmonic signal exhibits spatial symmetries that reflect the presence of eight different domain variants present in the film. A theoretical model is presented that explains the observed symmetries and extracts quantitative information on the nonlinear optical coefficients of the material and statistics of domain variants present in the film area being probed. The following ratios of nonlinear coefficients and birefringence was determined: d12/d11= - 3.498±0.171, |d26/d12\ = 0.365±0.010, \d26/d11| = 1.273±0.036, and \nb-na = 0.101±0.018 (at 532 nm).

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Probing domain microstructure in ferroelectric Bi₄Ti₃O₁₂ thin films by optical second harmonic generation

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