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

Jing Bo Li; Gunag Hui Rao; Guang Yao Liu; Jing Ran Chen; Li Lu; Xiunian Jing; Shanlin Li; Jing Kui Liang

doi:10.1016/j.jallcom.2006.01.041

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

Jing Bo Li^*
, Gunag Hui Rao
, Guang Yao Liu
, Jing Ran Chen
, Li Lu
, Xiunian Jing
, Shanlin Li
, Jing Kui Liang

^*Corresponding author for this work

CAS - Institute of Physics
CAS - International Center for Material Physics

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

The phase relation and the structural transition in (1 - x)Pb(Mg_1/3Nb_2/3)O₃-xPbTiO₃ 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.

Original language	English
Pages (from-to)	373-378
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	425
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.01.041
Publication status	Published - 30 Nov 2006
Externally published	Yes

Keywords

Dielectric analysis
Pb(MgNb)O-PbTiO
Phase transition
X-ray diffraction

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10.1016/j.jallcom.2006.01.041

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@article{bf1d7033ace14db287d668d31c2d35e2,

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

abstract = "The phase relation and the structural transition in (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 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 (MB) 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 MB-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.",

keywords = "Dielectric analysis, Pb(MgNb)O-PbTiO, Phase transition, X-ray diffraction",

author = "Li, \{Jing Bo\} and Rao, \{Gunag Hui\} and Liu, \{Guang Yao\} and Chen, \{Jing Ran\} and Li Lu and Xiunian Jing and Shanlin Li and Liang, \{Jing Kui\}",

year = "2006",

month = nov,

day = "30",

doi = "10.1016/j.jallcom.2006.01.041",

language = "English",

volume = "425",

pages = "373--378",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Structural transition in unpoled (1 - x)PMN-xPT ceramics near the morphotropic boundary

AU - Li, Jing Bo

AU - Rao, Gunag Hui

AU - Liu, Guang Yao

AU - Chen, Jing Ran

AU - Lu, Li

AU - Jing, Xiunian

AU - Li, Shanlin

AU - Liang, Jing Kui

PY - 2006/11/30

Y1 - 2006/11/30

N2 - The phase relation and the structural transition in (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 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 (MB) 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 MB-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.

AB - The phase relation and the structural transition in (1 - x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 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 (MB) 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 MB-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.

KW - Dielectric analysis

KW - Pb(MgNb)O-PbTiO

KW - Phase transition

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/33750502875

U2 - 10.1016/j.jallcom.2006.01.041

DO - 10.1016/j.jallcom.2006.01.041

M3 - Article

AN - SCOPUS:33750502875

SN - 0925-8388

VL - 425

SP - 373

EP - 378

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

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

Abstract

Keywords

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