Raman scattering from PbTiO<sub>3</sub> of various grain sizes at high hydrostatic pressures
Jinfang Meng; Guangtian Zou; Qiliang Ciu; Yongnian Zhao; Ziqiang Zhu; Jinfang Meng; State key Lab. for Superhard Mater., Jilin Univ., Changchun, China; Guangtian Zou; State key Lab. for Superhard Mater., Jilin Univ., Changchun, China; Qiliang Ciu; State key Lab. for Superhard Mater., Jilin Univ., Changchun, China; Yongnian Zhao; State key Lab. for Superhard Mater., Jilin Univ., Changchun, China; Ziqiang Zhu; State key Lab. for Superhard Mater., Jilin Univ., Changchun, China
Журнал:
Journal of Physics: Condensed Matter
Дата:
1994-08-08
Аннотация:
The Raman spectra for PbTiO<sub>3</sub> of various grain sizes at different hydrostatic pressures have revealed that the soft E(1TO) phonon mode appears to undergo a red shift in frequency and increases in linewidth with decreasing grain size, and that the pressure dependences of the soft mode in nanocrystalline PbTiO<sub>3</sub> can be correlated with the diffuse phase transition.
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