%0 Journal Article
%T Polarized Micro-Raman Study of the Temperature-Induced Phase Transition In0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3<br>Polarized Micro-Raman Study of the Temperature-Induced Phase Transition In 0.67 Pb（Mg1/3Nb2/3）O3-0.33PbTiO3
%A SUN Jing-Ya
%A YANG Yang
%A ZHU Ke
%A LIU Yu-Long
%A SIU G G
%A XU Z K
%A <br>孙靖雅
%A 杨洋
%A 朱恪
%A 刘玉龙
%A 萧季驹
%A 徐正奎
%J 中国物理快报
%D 2008
%I 
%X Polarized Raman spectra of ferroelectric relaxor 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (0.67PMN-0.33PT) single crystal are systematically investigated in a wide temperature range from -196 to 600°C by micro-Raman scattering technique. The results clearly reveal that there are two structural phase transitions in such composite ferroelectric relaxor: the rhombohedral-tetragonal (R-T) phase transition and the tetragonal-cubic (T-C) phase transition. The former occurs at about TR-T=34°C, corresponding to the vanishing of the soft A1 mode at 106cm-1 recorded in the parallel polarization. The latter appears at about TT-C=144°C, which can be verified with the vanishing of mode at 780cm-1 measured in the crossed polarization.
%K 78
%K 30
%K -j
%K 77
%K 84
%K Dy
%K 77
%K 80
%K Bh<br>铁电体
%K 偏振拉曼光谱
%K 温度
%K 相变
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=9B999AE8FAE479D1B7A1F6F588054845&yid=67289AFF6305E306&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=211C7E02AC474301&eid=2AC7DCCBBC26ECF8&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=18