Structural phase transitions between 700 and 850°C in SrZrO3 studied by Raman spectroscopy

Hirotaka Fujimori; Masato Kakihana; Koji Ioku; Seishi Goto; Masahiro Yoshimura

doi:10.2109/jcersj.112.189

Structural phase transitions between 700 and 850°C in SrZrO₃ studied by Raman spectroscopy

Hirotaka Fujimori, Masato Kakihana, Koji Ioku, Seishi Goto, Masahiro Yoshimura

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

23 Citations (Scopus)

Abstract

The Pnma-Imma-I4/mcm phase transitions of SrZrO₃ have been successfully observed by measuring the variation of energies of phonon modes as a function of temperature. The squares of phonon mode frequencies, ω₀², exhibit a linear relation with temperature, T, on both sides of the phase transitions. An unusual value of -7 of the ratio of ∂(ω₀²)/∂T below and above the phase transition temperature between Pnma and Imma, was observed compared to the value of - 2 expected from the mean field theory. The result can be accounted for in terms of coupling between an optical mode and strain.

Original language	English
Pages (from-to)	189-192
Number of pages	4
Journal	Journal of the Ceramic Society of Japan
Volume	112
Issue number	1304
DOIs	https://doi.org/10.2109/jcersj.112.189
Publication status	Published - 2004 Apr
Externally published	Yes

Keywords

High temperature
Perovskite
Phase transition
Phonon
Raman scattering

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

Access to Document

10.2109/jcersj.112.189

Cite this

@article{bd7dc2027b3743c4a0fbb67ac45ec1e5,

title = "Structural phase transitions between 700 and 850°C in SrZrO3 studied by Raman spectroscopy",

abstract = "The Pnma-Imma-I4/mcm phase transitions of SrZrO3 have been successfully observed by measuring the variation of energies of phonon modes as a function of temperature. The squares of phonon mode frequencies, ω02, exhibit a linear relation with temperature, T, on both sides of the phase transitions. An unusual value of -7 of the ratio of ∂(ω02)/∂T below and above the phase transition temperature between Pnma and Imma, was observed compared to the value of - 2 expected from the mean field theory. The result can be accounted for in terms of coupling between an optical mode and strain.",

keywords = "High temperature, Perovskite, Phase transition, Phonon, Raman scattering",

author = "Hirotaka Fujimori and Masato Kakihana and Koji Ioku and Seishi Goto and Masahiro Yoshimura",

year = "2004",

month = apr,

doi = "10.2109/jcersj.112.189",

language = "English",

volume = "112",

pages = "189--192",

journal = "Journal of the Ceramic Society of Japan",

issn = "0914-5400",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "1304",

}

TY - JOUR

T1 - Structural phase transitions between 700 and 850°C in SrZrO3 studied by Raman spectroscopy

AU - Fujimori, Hirotaka

AU - Kakihana, Masato

AU - Ioku, Koji

AU - Goto, Seishi

AU - Yoshimura, Masahiro

PY - 2004/4

Y1 - 2004/4

N2 - The Pnma-Imma-I4/mcm phase transitions of SrZrO3 have been successfully observed by measuring the variation of energies of phonon modes as a function of temperature. The squares of phonon mode frequencies, ω02, exhibit a linear relation with temperature, T, on both sides of the phase transitions. An unusual value of -7 of the ratio of ∂(ω02)/∂T below and above the phase transition temperature between Pnma and Imma, was observed compared to the value of - 2 expected from the mean field theory. The result can be accounted for in terms of coupling between an optical mode and strain.

AB - The Pnma-Imma-I4/mcm phase transitions of SrZrO3 have been successfully observed by measuring the variation of energies of phonon modes as a function of temperature. The squares of phonon mode frequencies, ω02, exhibit a linear relation with temperature, T, on both sides of the phase transitions. An unusual value of -7 of the ratio of ∂(ω02)/∂T below and above the phase transition temperature between Pnma and Imma, was observed compared to the value of - 2 expected from the mean field theory. The result can be accounted for in terms of coupling between an optical mode and strain.

KW - High temperature

KW - Perovskite

KW - Phase transition

KW - Phonon

KW - Raman scattering

UR - http://www.scopus.com/inward/record.url?scp=2442706730&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442706730&partnerID=8YFLogxK

U2 - 10.2109/jcersj.112.189

DO - 10.2109/jcersj.112.189

M3 - Article

AN - SCOPUS:2442706730

SN - 0914-5400

VL - 112

SP - 189

EP - 192

JO - Journal of the Ceramic Society of Japan

JF - Journal of the Ceramic Society of Japan

IS - 1304

ER -