Local Structure Studies of Ti for SrTi16O3 and SrTi18O3 by Advanced X-ray Absorption Spectroscopy Data Analysis

A. Anspoks; J. Timoshenko; D. Bocharov; J. Purans; F. Rocca; A. Sarakovskis; V. Trepakov; A. Dejneka; M. Itoh

doi:10.1080/00150193.2015.1060102

Local Structure Studies of Ti for SrTi¹⁶O₃ and SrTi¹⁸O₃ by Advanced X-ray Absorption Spectroscopy Data Analysis

A. Anspoks^*
, J. Timoshenko
, D. Bocharov
, J. Purans
, F. Rocca
, A. Sarakovskis
, V. Trepakov
, A. Dejneka
, M. Itoh

^*Corresponding author for this work

University of Latvia
National Research Council of Italy
Ioffe Physico-Technical Institute
Czech Academy of Sciences
Institute of Science Tokyo

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

3 Citations (Scopus)

Abstract

Strontium titanate is a model quantum paraelectric in which in the region of dominating quantum statistics the ferroelectric instability is inhibited due to nearly complete compensation of the harmonic contribution into ferroelectric soft mode frequency by the zero-point motion contribution. The enhancement of atomic masses by the substitution of ¹⁸O for ¹⁶O decreases the zero-point atomic motion and low-T ferroelectricity in SrTi¹⁸O₃ is realized. In this study we report on the local structure of Ti in SrTi¹⁶O₃ and SrTi¹⁸O₃ by Ti K-edge extended x-ray absorption fine structure measurements in temperature range 6 - 300 K.

Original language	English
Pages (from-to)	42-52
Number of pages	11
Journal	Ferroelectrics
Volume	485
Issue number	1
DOIs	https://doi.org/10.1080/00150193.2015.1060102
Publication status	Published - 26 Aug 2015

Keywords

Strontium titanate
X-ray absorption spectroscopy
isotopic effect
local atomic structure
phase transitions
quantum paraelectric

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10.1080/00150193.2015.1060102

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title = "Local Structure Studies of Ti for SrTi16O3 and SrTi18O3 by Advanced X-ray Absorption Spectroscopy Data Analysis",

abstract = "Strontium titanate is a model quantum paraelectric in which in the region of dominating quantum statistics the ferroelectric instability is inhibited due to nearly complete compensation of the harmonic contribution into ferroelectric soft mode frequency by the zero-point motion contribution. The enhancement of atomic masses by the substitution of 18O for 16O decreases the zero-point atomic motion and low-T ferroelectricity in SrTi18O3 is realized. In this study we report on the local structure of Ti in SrTi16O3 and SrTi18O3 by Ti K-edge extended x-ray absorption fine structure measurements in temperature range 6 - 300 K.",

keywords = "Strontium titanate, X-ray absorption spectroscopy, isotopic effect, local atomic structure, phase transitions, quantum paraelectric",

author = "A. Anspoks and J. Timoshenko and D. Bocharov and J. Purans and F. Rocca and A. Sarakovskis and V. Trepakov and A. Dejneka and M. Itoh",

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year = "2015",

month = aug,

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doi = "10.1080/00150193.2015.1060102",

language = "English",

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TY - JOUR

T1 - Local Structure Studies of Ti for SrTi16O3 and SrTi18O3 by Advanced X-ray Absorption Spectroscopy Data Analysis

AU - Anspoks, A.

AU - Timoshenko, J.

AU - Bocharov, D.

AU - Purans, J.

AU - Rocca, F.

AU - Sarakovskis, A.

AU - Trepakov, V.

AU - Dejneka, A.

AU - Itoh, M.

PY - 2015/8/26

Y1 - 2015/8/26

N2 - Strontium titanate is a model quantum paraelectric in which in the region of dominating quantum statistics the ferroelectric instability is inhibited due to nearly complete compensation of the harmonic contribution into ferroelectric soft mode frequency by the zero-point motion contribution. The enhancement of atomic masses by the substitution of 18O for 16O decreases the zero-point atomic motion and low-T ferroelectricity in SrTi18O3 is realized. In this study we report on the local structure of Ti in SrTi16O3 and SrTi18O3 by Ti K-edge extended x-ray absorption fine structure measurements in temperature range 6 - 300 K.

AB - Strontium titanate is a model quantum paraelectric in which in the region of dominating quantum statistics the ferroelectric instability is inhibited due to nearly complete compensation of the harmonic contribution into ferroelectric soft mode frequency by the zero-point motion contribution. The enhancement of atomic masses by the substitution of 18O for 16O decreases the zero-point atomic motion and low-T ferroelectricity in SrTi18O3 is realized. In this study we report on the local structure of Ti in SrTi16O3 and SrTi18O3 by Ti K-edge extended x-ray absorption fine structure measurements in temperature range 6 - 300 K.

KW - Strontium titanate

KW - X-ray absorption spectroscopy

KW - isotopic effect

KW - local atomic structure

KW - phase transitions

KW - quantum paraelectric

UR - https://www.scopus.com/pages/publications/84947997112

U2 - 10.1080/00150193.2015.1060102

DO - 10.1080/00150193.2015.1060102

M3 - Article

AN - SCOPUS:84947997112

SN - 0015-0193

VL - 485

SP - 42

EP - 52

JO - Ferroelectrics

JF - Ferroelectrics

IS - 1

ER -

Local Structure Studies of Ti for SrTi¹⁶O₃ and SrTi¹⁸O₃ by Advanced X-ray Absorption Spectroscopy Data Analysis

Abstract

Keywords

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