Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary

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	Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary; Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary
	J. B. Li; G. H. Rao; G. Y. Liu; J. R. Chen; L. Lu; X. N. Jing; S. L. Li; J. K. Liang
	2006 ; 2006
发表期刊	Journal of Alloys and Compounds ; Journal of Alloys and Compounds
ISSN	0925-8388 ; 0925-8388
卷号	425 期号:1-2 页码:373-378
摘要	The phase relation and the structural transition in (1-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) ceramics for 0.28 <= x <= 0.4 were investigated by high resolution X-ray powder diffraction (HR-XRD), temperature-dependent X-ray powder diffraction (T-XRD) and dielectric analysis. Unexpected broad and frequency dispersive dielectric anomalies were observed, just below the tetragonal (T)-cubic (C) transition dielectric peaks in temperature dependent dielectric permittivity in the unpoled ceramics for x = 0.32 and 0.34. Structural analysis revealed that the monoclinic (M-B) and tetragonal (T) structures coexisted in the composition range 0.32 <= x <= 0.36 at room temperature and in a wide temperature range for x = 0.32 and 0.34, however. in a non-equilibrium state. The sluggish M-B-T transition is closely related to the dielectric anomalies. The metastable ferroelectric phase diagram near MPB was re-constructed based on XRD and dielectric analysis. The phase transition procedure was discussed. (c) 2006 Elsevier B.V. All rights reserved.; The phase relation and the structural transition in (1-x)Pb(Mg1/3Nb2/3)O-3-xPbTiO(3) ceramics for 0.28 <= x <= 0.4 were investigated by high resolution X-ray powder diffraction (HR-XRD), temperature-dependent X-ray powder diffraction (T-XRD) and dielectric analysis. Unexpected broad and frequency dispersive dielectric anomalies were observed, just below the tetragonal (T)-cubic (C) transition dielectric peaks in temperature dependent dielectric permittivity in the unpoled ceramics for x = 0.32 and 0.34. Structural analysis revealed that the monoclinic (M-B) and tetragonal (T) structures coexisted in the composition range 0.32 <= x <= 0.36 at room temperature and in a wide temperature range for x = 0.32 and 0.34, however. in a non-equilibrium state. The sluggish M-B-T transition is closely related to the dielectric anomalies. The metastable ferroelectric phase diagram near MPB was re-constructed based on XRD and dielectric analysis. The phase transition procedure was discussed. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china. acad sinica, int ctr mat phys, shenyang 110016, peoples r china.;li, jb (reprint author), chinese acad sci, inst phys, beijing natl lab condensed matter phys, a03, beijing 100080, peoples r china;jbli@aphy.iphy.ac.cn ; chinese acad sci, inst phys, beijing natl lab condensed matter phys, beijing 100080, peoples r china. acad sinica, int ctr mat phys, shenyang 110016, peoples r china.;li, jb (reprint author), chinese acad sci, inst phys, beijing natl lab condensed matter phys, a03, beijing 100080, peoples r china;jbli@aphy.iphy.ac.cn
关键词	Phase Transition Phase Transition X-ray Diffraction X-ray Diffraction Dielectric Analysis Dielectric Analysis Pb(Mg1/3nb2/3)o-3-Pbtio3 Pb(Mg1/3nb2/3)o-3-Pbtio3 Ferroelectric Phase-transitions Ferroelectric Phase-transitions Polarization Rotation Polarization Rotation Neutron-diffraction Neutron-diffraction Single-crystal Single-crystal Perovskites Perovskites Stability Stability Behavior Behavior
URL	查看原文 ; 查看原文
WOS记录号	WOS:000242641500067 ; WOS:000242641500067
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34302
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. B. Li,G. H. Rao,G. Y. Liu,et al. Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary, Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary[J]. Journal of Alloys and Compounds, Journal of Alloys and Compounds,2006, 2006,425, 425(1-2):373-378, 373-378.
APA	J. B. Li.,G. H. Rao.,G. Y. Liu.,J. R. Chen.,L. Lu.,...&J. K. Liang.(2006).Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary.Journal of Alloys and Compounds,425(1-2),373-378.
MLA	J. B. Li,et al."Structural transition in unpoled (1-x)PMN-xPT ceramics near the morphotropic boundary".Journal of Alloys and Compounds 425.1-2(2006):373-378.