Broken symmetry in low-temperature BaTiO3 phases: Strain effects probed by Raman scattering

Minoru Osada, Masato Kakihana, Satoshi Wada, Tatsuo Noma, Woo Seok Cho

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Abstract

Micro-Raman spectroscopy is utilized to study the temperature dependence of domain structures in a high-quality BaTiO3 bulk crystal. For T=4-100 K, the spectra of the initially 90° domain wall region at room temperature exhibit the splitting of A1 mode at ~244 cm-1 with the appearance of an additional peak at ~263 cm-1, the behavior of which is different from that of a sharp peak observed at ~244 cm-1 in the single-domain region. The results imply that the strain fields exist in the domain walls at low temperatures, thus altering the local crystal symmetry.

Original languageEnglish
Pages (from-to)3393-3395
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number21
Publication statusPublished - 1999 Nov 22
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Osada, M., Kakihana, M., Wada, S., Noma, T., & Cho, W. S. (1999). Broken symmetry in low-temperature BaTiO3 phases: Strain effects probed by Raman scattering. Applied Physics Letters, 75(21), 3393-3395.