STRUCTURAL AND RAMAN ANALYSES OF THE (A(1-X)PB(X)) TIO3(A=CA, SR, BA) PEROVSKITES

被引:6
作者
CALOS, N [1 ]
FORRESTER, J [1 ]
WHITE, TJ [1 ]
GRAVES, PR [1 ]
MYHRA, S [1 ]
机构
[1] AEA TECHNOL,HARWELL OX11 0RA,OXON,ENGLAND
关键词
D O I
10.1007/BF01154506
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Powder X-ray diffraction and laser Raman spectroscopy were used to study systematically the structural and dynamical changes in three series of plumbous perovskites of composition Ba1-xPbxTiO3Sr1-xPbxTiO3 and Ca1-xPbxTiO3 with 0 < x < 1. For the latter two series prominent phase transitions were found at x ca. 0.5 and 0.55, respectively. As well, Raman spectroscopy provided the means to track the evolution of active vibrational modes characteristic of the end-members across the doping range. The temperature dependence of the Raman spectra showed that the ferroelectric transition temperature of the (Ca, Pb) series can be tailored over a wide temperature range by judicious doping.
引用
收藏
页码:4930 / 4935
页数:6
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