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Strain-induced second-harmonic generation in pseudocubic Ba0.48Sr0.52TiO3 thin films SCIE SCOPUS

Title
Strain-induced second-harmonic generation in pseudocubic Ba0.48Sr0.52TiO3 thin films
Authors
Oh, UCMa, JWong, GKLKetterson, JBJe, JH
Date Issued
2000-03-13
Publisher
AMER INST PHYSICS
Abstract
We report the observation of a strong second-order nonlinear optical response from epitaxial Ba0.48Sr0.52TiO3 thin films grown on MgO(001) by magnetron sputtering. The result is unexpected since the crystal structure of Ba0.48Sr0.52TiO3 is centrosymmetric under ambient conditions. A second-order nonlinear susceptibility d(33) as large as 11 pm/V at a fundamental wavelength of 1.064 mu m is observed in a 300 Angstrom thick film. By studying a series of films with different strains, induced by a film-substrate lattice mismatch, we conclude that the resulting tetragonal distortion, presumably accompanied by a loss of inversion symmetry, is responsible for the second-harmonic generation. (C) 2000 American Institute of Physics. [S0003-6951(00)02210-5].
URI
https://oasis.postech.ac.kr/handle/2014.oak/9400
DOI
10.1063/1.126064
ISSN
0003-6951
Article Type
Article
Citation
APPLIED PHYSICS LETTERS, vol. 76, no. 11, page. 1461 - 1463, 2000-03-13
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제정호JE, JUNG HO
Dept of Materials Science & Enginrg
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