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Enhancement of electric field‐induced strain in BaTiO 3 ceramics through grain size optimization
Author(s) -
Tan Yongqiang,
Zhang Jialiang,
Wang Chunlei,
Viola Giuseppe,
Yan Haixue
Publication year - 2015
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431233
Subject(s) - grain size , materials science , ceramic , electric field , grain boundary , strain (injury) , composite material , grain boundary strengthening , grain growth , condensed matter physics , microstructure , physics , medicine , quantum mechanics
The effect of grain size on electric field‐induced strain in BaTiO 3 ceramics was explored. The unipolar strain first increases and then decreases with increasing grain size with a peak of 0.28% around 4.5 µm. Small grains have more recoverable non‐180° domains, but also more restriction from grain boundaries, while coarse grains have less restriction from grain boundaries, but less recoverable non‐180° domains. Thus, only ceramics with intermediate grain size can show large electric field‐induced strain at electrical loading regime conditions.