Studies on the Lanthanum-Modified Lead Titanate Ultrafine Particles by Raman Spectroscopy

Chemical Research in Chinese Universities ›› 1998, Vol. 14 ›› Issue (2): 184-187.

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Studies on the Lanthanum-Modified Lead Titanate Ultrafine Particles by Raman Spectroscopy

CUI Ai-li¹, GE Xu-dong¹, HU Yong-qi¹, JIN Yong¹, WANG Xiao-hui²

1. Department of Chemical Engineering, Tsinghua University, Beijing 100084;
2. Department of Material Science, Tsinghua University, Beijing 100084

Received:1996-12-29 Online:1998-04-24 Published:2011-08-17

Abstract

Abstract: Lanthanum-modified lead titanate(PLT14) ultrafine particles were synthesized by means of stearic acid gel method. The structure of the samples was characterized using X-ray diffraction(XRD) and TEM. The crystal graphic parameters of the samples were calculated. The Raman spectra of PLT14 powders at a high pressure as well as a high temperature reveal that the phase transition pressure or temperature shifts to a lower pressure or temperature with the decrease of grain size.

Key words: Raman spectrum, PLT, Ultrafine particle, Size effect

CUI Ai-li, GE Xu-dong, HU Yong-qi, JIN Yong, WANG Xiao-hui . Studies on the Lanthanum-Modified Lead Titanate Ultrafine Particles by Raman Spectroscopy[J]. Chemical Research in Chinese Universities, 1998, 14(2): 184-187.

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Studies on the Lanthanum-Modified Lead Titanate Ultrafine Particles by Raman Spectroscopy

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