Raman scattering study of Ca-modified lead titanate

Kihiro Kato; Shinya Tsukada; Jun Kano; Takashi Yamamoto; Seiji Kojima

doi:10.1109/TUFFC.2007.585

Raman scattering study of Ca-modified lead titanate

Kihiro Kato, Shinya Tsukada, Jun Kano, Takashi Yamamoto, Seiji Kojima

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

3 Citations (Scopus)

Abstract

The paraelectric to ferroelectric phase transitions were studied by Raman scattering in Ca-doped lead titanate ceramics. The soft optic modes responsible for the ferroelectric phase transitions were clearly observed. The A ₁(1TO) mode, which softens toward T_c, contains four sub-peaks. The frequencies of these subpeaks depend to a great extent on the Ca content and the temperature. These behaviors are discussed on the basis of the anharmonicity of lattice vibrations.

Original language	English
Article number	4430049
Pages (from-to)	2599-2602
Number of pages	4
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	54
Issue number	12
DOIs	https://doi.org/10.1109/TUFFC.2007.585
Publication status	Published - Dec 2007
Externally published	Yes

ASJC Scopus subject areas

Instrumentation
Acoustics and Ultrasonics
Electrical and Electronic Engineering

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10.1109/TUFFC.2007.585

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AU - Kano, Jun

AU - Yamamoto, Takashi

AU - Kojima, Seiji

PY - 2007/12

Y1 - 2007/12

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AB - The paraelectric to ferroelectric phase transitions were studied by Raman scattering in Ca-doped lead titanate ceramics. The soft optic modes responsible for the ferroelectric phase transitions were clearly observed. The A 1(1TO) mode, which softens toward Tc, contains four sub-peaks. The frequencies of these subpeaks depend to a great extent on the Ca content and the temperature. These behaviors are discussed on the basis of the anharmonicity of lattice vibrations.

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Raman scattering study of Ca-modified lead titanate

Abstract

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