Probing Nanoscale Ferroelectricity by Ultraviolet Raman Spectroscopy

Dmitri Tenne; A. Bruchhausen; N. D. Lanzillotti-Kimura; A. Fainstein; R. S. Katiyar; A. Cantarero; A. Soukiassian

Probing Nanoscale Ferroelectricity by Ultraviolet Raman Spectroscopy

Dmitri Tenne, A. Bruchhausen, N. D. Lanzillotti-Kimura, A. Fainstein, R. S. Katiyar, A. Cantarero, A. Soukiassian

Physics Department

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Abstract

We demonstrate that ultraviolet Raman spectroscopy is an effective technique to measure the transition temperature, T _c , accurately in ferroelectric ultrathin films and superlattices. We show that one-unit-cell thick BaTiO ₃ layers in BaTiO ₃ /SrTiO ₃ superlattices are not only ferroelectric ( Tc as high as 250 K), but also polarize the quantum paraelectric SrTiO ₃ layers adjacent to them. T _c was tuned by ~ 500 K by varying the thicknesses of BaTiO ₃ and SrTiO ₃ layers, revealing the essential roles of electrical and mechanical boundary conditions for nanoscale ferroelectricity.

Original language	American English
Journal	Physics Faculty Publications and Presentations
State	Published - 1 Jan 2006

EGS Disciplines

Physics

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title = "Probing Nanoscale Ferroelectricity by Ultraviolet Raman Spectroscopy",

abstract = " We demonstrate that ultraviolet Raman spectroscopy is an effective technique to measure the transition temperature, T c , accurately in ferroelectric ultrathin films and superlattices. We show that one-unit-cell thick BaTiO 3 layers in BaTiO 3 /SrTiO 3 superlattices are not only ferroelectric ( Tc as high as 250 K), but also polarize the quantum paraelectric SrTiO 3 layers adjacent to them. T c was tuned by ~ 500 K by varying the thicknesses of BaTiO 3 and SrTiO 3 layers, revealing the essential roles of electrical and mechanical boundary conditions for nanoscale ferroelectricity.",

author = "Dmitri Tenne and A. Bruchhausen and Lanzillotti-Kimura, {N. D.} and A. Fainstein and Katiyar, {R. S.} and A. Cantarero and A. Soukiassian",

year = "2006",

month = jan,

day = "1",

language = "American English",

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TY - JOUR

T1 - Probing Nanoscale Ferroelectricity by Ultraviolet Raman Spectroscopy

AU - Tenne, Dmitri

AU - Bruchhausen, A.

AU - Lanzillotti-Kimura, N. D.

AU - Fainstein, A.

AU - Katiyar, R. S.

AU - Cantarero, A.

AU - Soukiassian, A.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - We demonstrate that ultraviolet Raman spectroscopy is an effective technique to measure the transition temperature, T c , accurately in ferroelectric ultrathin films and superlattices. We show that one-unit-cell thick BaTiO 3 layers in BaTiO 3 /SrTiO 3 superlattices are not only ferroelectric ( Tc as high as 250 K), but also polarize the quantum paraelectric SrTiO 3 layers adjacent to them. T c was tuned by ~ 500 K by varying the thicknesses of BaTiO 3 and SrTiO 3 layers, revealing the essential roles of electrical and mechanical boundary conditions for nanoscale ferroelectricity.

AB - We demonstrate that ultraviolet Raman spectroscopy is an effective technique to measure the transition temperature, T c , accurately in ferroelectric ultrathin films and superlattices. We show that one-unit-cell thick BaTiO 3 layers in BaTiO 3 /SrTiO 3 superlattices are not only ferroelectric ( Tc as high as 250 K), but also polarize the quantum paraelectric SrTiO 3 layers adjacent to them. T c was tuned by ~ 500 K by varying the thicknesses of BaTiO 3 and SrTiO 3 layers, revealing the essential roles of electrical and mechanical boundary conditions for nanoscale ferroelectricity.

UR - https://scholarworks.boisestate.edu/physics_facpubs/17

M3 - Article

JO - Physics Faculty Publications and Presentations

JF - Physics Faculty Publications and Presentations

ER -

Probing Nanoscale Ferroelectricity by Ultraviolet Raman Spectroscopy

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