Domain structure-second harmonic generation correlation in potassium niobate thin films deposited on a strontium titanate substrate

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The experimental measurement of second harmonic generation (SHG) and theoretical correlation of the SHG output to domain microstructure is presented for ferroelectric KNbO3 (110) thin films on a SrTiO3 (100) substrate. From X-ray diffraction, four possible domain variants in the film growth plane were determined to be KNbO3 [110]∥SrTiO3 [001], [001], [010], or [010] denoted as variants X+, X-, Y+, and Y-, respectively. From theoretical modeling of the SHG output from the film, the ratios of nonlinear coefficients d0/d32 and d24/d0 in the film were determined to be 2.19 ± 0.12 and 0.46 ± 0.26, respectively, in good agreement with the bulk KNbO3 crystals. The term d0 is defined as d15 + (d31 + d33)/2. The SHG can also distinguish between X+ and X-, as well as Y+ and Y-, domains, which was not possible by X-ray diffraction. The ratio of net area fraction (|AX+ - AX-|/|AY+ - AY-|) was determined to be 2.76 ± 1.06 in the probe area (2.25π mm2) where AX+, AX-, AY+, and AY- are the area fractions of domain variants X+, X-, Y+, and Y-, respectively, in the film growth plane.

Original languageEnglish (US)
Pages (from-to)3289-3296
Number of pages8
JournalJournal of the American Ceramic Society
Volume79
Issue number12
DOIs
StatePublished - Jan 1 1996

Fingerprint

domain structure
titanate
Strontium
Harmonic generation
strontium
Potassium
potassium
substrate
Thin films
Film growth
Substrates
X ray diffraction
X-ray diffraction
Ferroelectric materials
microstructure
Crystals
Microstructure
probe
strontium titanium oxide
potassium niobate

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

@article{a36146fc56444b878712cd9a7bcb8f42,
title = "Domain structure-second harmonic generation correlation in potassium niobate thin films deposited on a strontium titanate substrate",
abstract = "The experimental measurement of second harmonic generation (SHG) and theoretical correlation of the SHG output to domain microstructure is presented for ferroelectric KNbO3 (110) thin films on a SrTiO3 (100) substrate. From X-ray diffraction, four possible domain variants in the film growth plane were determined to be KNbO3 [110]∥SrTiO3 [001], [001], [010], or [010] denoted as variants X+, X-, Y+, and Y-, respectively. From theoretical modeling of the SHG output from the film, the ratios of nonlinear coefficients d0/d32 and d24/d0 in the film were determined to be 2.19 ± 0.12 and 0.46 ± 0.26, respectively, in good agreement with the bulk KNbO3 crystals. The term d0 is defined as d15 + (d31 + d33)/2. The SHG can also distinguish between X+ and X-, as well as Y+ and Y-, domains, which was not possible by X-ray diffraction. The ratio of net area fraction (|AX+ - AX-|/|AY+ - AY-|) was determined to be 2.76 ± 1.06 in the probe area (2.25π mm2) where AX+, AX-, AY+, and AY- are the area fractions of domain variants X+, X-, Y+, and Y-, respectively, in the film growth plane.",
author = "Venkatraman Gopalan and Rishi Raj",
year = "1996",
month = "1",
day = "1",
doi = "10.1111/j.1151-2916.1996.tb08107.x",
language = "English (US)",
volume = "79",
pages = "3289--3296",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "12",

}

TY - JOUR

T1 - Domain structure-second harmonic generation correlation in potassium niobate thin films deposited on a strontium titanate substrate

AU - Gopalan, Venkatraman

AU - Raj, Rishi

PY - 1996/1/1

Y1 - 1996/1/1

N2 - The experimental measurement of second harmonic generation (SHG) and theoretical correlation of the SHG output to domain microstructure is presented for ferroelectric KNbO3 (110) thin films on a SrTiO3 (100) substrate. From X-ray diffraction, four possible domain variants in the film growth plane were determined to be KNbO3 [110]∥SrTiO3 [001], [001], [010], or [010] denoted as variants X+, X-, Y+, and Y-, respectively. From theoretical modeling of the SHG output from the film, the ratios of nonlinear coefficients d0/d32 and d24/d0 in the film were determined to be 2.19 ± 0.12 and 0.46 ± 0.26, respectively, in good agreement with the bulk KNbO3 crystals. The term d0 is defined as d15 + (d31 + d33)/2. The SHG can also distinguish between X+ and X-, as well as Y+ and Y-, domains, which was not possible by X-ray diffraction. The ratio of net area fraction (|AX+ - AX-|/|AY+ - AY-|) was determined to be 2.76 ± 1.06 in the probe area (2.25π mm2) where AX+, AX-, AY+, and AY- are the area fractions of domain variants X+, X-, Y+, and Y-, respectively, in the film growth plane.

AB - The experimental measurement of second harmonic generation (SHG) and theoretical correlation of the SHG output to domain microstructure is presented for ferroelectric KNbO3 (110) thin films on a SrTiO3 (100) substrate. From X-ray diffraction, four possible domain variants in the film growth plane were determined to be KNbO3 [110]∥SrTiO3 [001], [001], [010], or [010] denoted as variants X+, X-, Y+, and Y-, respectively. From theoretical modeling of the SHG output from the film, the ratios of nonlinear coefficients d0/d32 and d24/d0 in the film were determined to be 2.19 ± 0.12 and 0.46 ± 0.26, respectively, in good agreement with the bulk KNbO3 crystals. The term d0 is defined as d15 + (d31 + d33)/2. The SHG can also distinguish between X+ and X-, as well as Y+ and Y-, domains, which was not possible by X-ray diffraction. The ratio of net area fraction (|AX+ - AX-|/|AY+ - AY-|) was determined to be 2.76 ± 1.06 in the probe area (2.25π mm2) where AX+, AX-, AY+, and AY- are the area fractions of domain variants X+, X-, Y+, and Y-, respectively, in the film growth plane.

UR - http://www.scopus.com/inward/record.url?scp=0030414703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030414703&partnerID=8YFLogxK

U2 - 10.1111/j.1151-2916.1996.tb08107.x

DO - 10.1111/j.1151-2916.1996.tb08107.x

M3 - Article

AN - SCOPUS:0030414703

VL - 79

SP - 3289

EP - 3296

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 12

ER -