Premium
Grain Size Effects on Piezoelectric Properties and Domain Structure of BaTiO 3 Ceramics Prepared by Two‐Step Sintering
Author(s) -
Huan Yu,
Wang Xiaohui,
Fang Jian,
Li Longtu
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12601
Subject(s) - sintering , barium titanate , grain size , materials science , ceramic , piezoelectricity , piezoelectric coefficient , mineralogy , chemical engineering , composite material , chemistry , engineering
A series of highly dense barium titanate ( BaTiO 3 ) ceramics with the average grain size ( GS ) from 0.29 to 8.61 μm are successfully prepared by two‐step sintering, and the GS effect on piezoelectric coefficient ( d 33 ) is systematically discussed in this work. It is found that when GS above 1 μm, d 33 can be enhanced with decreasing GS , reaching a maximum value of 519 pC/N around 1 μm due to the high activity of domain wall mobility. Subsequently, d 33 rapidly drops with a further decrease in GS owing to the reduced domain density. The results suggest that it is possible to prepare high‐performance BaTiO 3 ceramics by controlling the GS and domain configuration properly, which brings great revitalization to the BaTiO 3 ‐based piezoceramics.