Raman Studies on Structure Transitions of Layered Ferroelectrics Ba2+x Bi4-x Ti5-x Nbx O18
HAN Jie, ZOU Guang-tian, CUI Qi-liang, YANG Hai-bin, CUI Tian
National Laboratory of Superhard Materials, Jilin University, Changchun 130023
Raman Studies on Structure Transitions of Layered Ferroelectrics Ba2+x Bi4-x Ti5-x Nbx O18
HAN Jie;ZOU Guang-tian;CUI Qi-liang;YANG Hai-bin;CUI Tian
National Laboratory of Superhard Materials, Jilin University, Changchun 130023
关键词 ：
61.50.Ks ,
64.70.Kb ,
77.80.Bh
Abstract ： Raman spectra of layered ferroelectrics Ba2+x Bi4-x Ti5-x Nbx O18 (0 ≤ x ≤ 2) at room temperature in the range 20-1000cm-1 were investigated. Vibration modes were assigned with the use of internal mode approach. Two doping-induced structure phase transitions were observed at about x = 0.50 and x = 1.25, respectively. Raman spectra variations were analyzed according to the selection rules of BO6 octahedra in various symmetry. Polycrystalline samples were synthesized by solid state reaction method.
Key words ：
61.50.Ks
64.70.Kb
77.80.Bh
出版日期: 1998-06-01
引用本文:
HAN Jie;ZOU Guang-tian;CUI Qi-liang;YANG Hai-bin;CUI Tian. Raman Studies on Structure Transitions of Layered Ferroelectrics Ba2+x Bi4-x Ti5-x Nbx O18 [J]. 中国物理快报, 1998, 15(6): 438-440.
2+x Bi4-x Ti5-x Nbx O18 . Chin. Phys. Lett., 1998, 15(6): 438-440.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1998/V15/I6/438
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1998, Vol. 15 
