Raman scattering study of Ca-modified lead titanate

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Article number4430049
Pages (from-to)2599-2602
Number of pages4
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Issue number12
Publication statusPublished - Dec 2007
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering


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