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Title: Ferroelastic domain structure and phase transition in single-crystalline [PbZn1/3Nb2/3O3]1-x[PbTiO3]x observed via in situ x-ray microbeam
Authors: Li, Tao
Du, Zehui
Tamura, Nobumichi
Ye, Mao
Inguva, Saikumar
Lu, Wei
Zeng, Xierong
Ke, Shanming
Huang, Haitao
Keywords: Science::Physics
Issue Date: 2017
Source: Li, T., Du, Z., Tamura, N., Ye, M., Inguva, S., Lu, W., . . . Huang, H. (2018). Ferroelastic domain structure and phase transition in single-crystalline [PbZn1/3Nb2/3O3]1-x[PbTiO3]x observed via in situ X-ray microbeam. Journal of the European Ceramic Society, 38(4), 1488-1497. doi:10.1016/j.jeurceramsoc.2017.11.021
Journal: Journal of the European Ceramic Society
Abstract: (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 ((1-x)PZN-xPT in short) is one of the most important piezoelectric materials. In this work, we extensively investigated (1-x)PZN-xPT (x = 0.07–0.11) ferroelectric single crystals using in-situ synchrotron μXRD, complemented by TEM and PFM, to correlate microstructures with phase transitions. The results reveal that (i) at 25 °C, the equilibrium state of (1-x)PZN-xPT is a metastable orthorhombic phase for x = 0.07 and 0.08, while it shows coexistence of orthorhombic and tetragonal phases for x = 0.09 and x = 0.11, with all ferroelectric phases accompanied by ferroelastic domains; (ii) upon heating, the phase transformation in x = 0.07 is Orthorhombic → Monoclinic → Tetragonal → Cubic. The coexistence of ferroelectric tetragonal and paraelectric cubic phases was in-situ observed in x = 0.08 above Curie temperature (TC), and (iii) phase transition can be explained by the evolution of the ferroelectric and ferroelastic domains. These results disclose that (1-x)PZN-xPT are in an unstable regime, which is possible factor for its anomalous dielectric response and high piezoelectric coefficient.
ISSN: 0955-2219
DOI: 10.1016/j.jeurceramsoc.2017.11.021
Rights: © 2017 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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