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	Shifting of the morphotropic phase boundary and superior piezoelectric response in Nb-doped Pb(Zr, Ti)O-3 epitaxial thin films
	Zhu, Zhi-Xiang ; Li, Jing-Feng ; Liu, Yunya ; Li, Jiangyu
	2010-10-12 ; 2010-10-12
关键词	Epitaxial films MPB Piezoelectricity Phase transition Sol-gel process POLARIZED RAMAN-SCATTERING NEUTRON-DIFFRACTION CERAMICS SRTIO3 FIELD PZT FERROELECTRICITY TEMPERATURE TRANSITIONS COEXISTENCE Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering
中文摘要	A shift of the morphotropic phase boundary (MPB) and a superior piezoelectric response are observed in Nb-doped Pb(ZrxTi1-x)O-3 (PNZT) thin films epitaxially grown on Nb-doped SrTiO3(1 0 0) (Nb:STO) substrates. X-ray diffraction and Raman spectra characterizations confirm that a phase transition from a tetragonal structure to a rhombohedral structure occurs when the Zr/Ti ratio varies from 20/80 to 80/20. The phenomenological theory and experimental analyses suggest that the MPB of epitaxial PNZT thin films is shifted to the higher Zr/Ti ratio (around 70/30) from the conventional ratio (52/48) due to the misfit compressive stress induced by the substrate. A maximum local effective longitudinal piezoelectric coefficient (d(33)) up to 307 pm V-1 is observed at a Zr/Ti ratio of 70/30 in the current compositional range, again confirming the shifting of MPB in epitaxial PNZT thin films. These findings offer a new insight for the fabrication of epitaxial PZT thin films at MPB with a superior piezoelectric response. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
语种	英语 ; 英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78329]
专题	清华大学
推荐引用方式 GB/T 7714	Zhu, Zhi-Xiang,Li, Jing-Feng,Liu, Yunya,et al. Shifting of the morphotropic phase boundary and superior piezoelectric response in Nb-doped Pb(Zr, Ti)O-3 epitaxial thin films[J],2010, 2010.
APA	Zhu, Zhi-Xiang,Li, Jing-Feng,Liu, Yunya,&Li, Jiangyu.(2010).Shifting of the morphotropic phase boundary and superior piezoelectric response in Nb-doped Pb(Zr, Ti)O-3 epitaxial thin films..
MLA	Zhu, Zhi-Xiang,et al."Shifting of the morphotropic phase boundary and superior piezoelectric response in Nb-doped Pb(Zr, Ti)O-3 epitaxial thin films".(2010).

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