Crystal structure and piezoelectric characteristics of various phases near the triple-point composition in PZ-PT-PNN system

Title
Crystal structure and piezoelectric characteristics of various phases near the triple-point composition in PZ-PT-PNN system
Authors
최지원강종윤채근화이태곤김선우김은지이상진황현규홍연우김정석남산
Keywords
Piezoelectricity; Ceramic material; Phase diagram; Nanodomains; Landau theory
Issue Date
2020-05
Publisher
Journal of the European Ceramic Society
Citation
VOL 40, NO 5-1956
Abstract
Crystal structures and piezoelectric properties of PbZrO3-PbTiO3-Pb(Ni1/3Nb2/3)O3 ceramics near the triple point composition, particularly characteristics of the pseudocubic phase, were investigated. The pseudocubic phase, which formed near the triple point composition, disappeared with increase in the PbZrO3 content. The pseudocubic phase had the Pm3m cubic structure. The tetragonal-pseudocubic morphotropic phase boundary (MPB) structure was developed during the tetragonal-to-cubic phase transformation. However, the rhombohedral phase directly transformed to the cubic phase because the structure of pseudocubic phase was similar to the rhombohedral structure. The specimens with pseudocubic phase and the specimens near pseudocubic phase exhibited nano-sized domains and small coercive electric fields, revealing their low domain wall energies. These specimens exhibited second-order ferroelectric-to-paraelectric phase transition and low Curie temperatures, confirming their low domain wall energies. The enhanced dielectric and piezoelectric properties of these specimens could be attributed to their low domain wall energies.
URI
http://pubs.kist.re.kr/handle/201004/71017
ISSN
0955-2219
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE