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In Situ Transmission Electron Microscopy of Electric Field‐Triggered Reversible Domain Formation in Bi‐Based Lead‐Free Piezoceramics
Author(s) -
Kling Jens,
Tan Xiaoli,
Jo Wook,
Kleebe HansJoachim,
Fuess Hartmut,
Rödel Jürgen
Publication year - 2010
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/j.1551-2916.2010.03778.x
Subject(s) - transmission electron microscopy , in situ , materials science , electric field , domain (mathematical analysis) , field (mathematics) , electron microscope , nanotechnology , chemistry , optics , physics , quantum mechanics , mathematical analysis , mathematics , organic chemistry , pure mathematics
A lead‐free piezoelectric 0.91(Bi 1/2 Na 1/2 )TiO 3 –0.06BaTiO 3 –0.03(K 0.5 Na 0.5 )NbO 3 ceramic with high strain was examined in situ under an applied electric field using the transmission electron microscope. No domain structure is observed without an electric field, but an alternating electric field leads to the reversible formation of a lamellar domain structure. Correlations to polarization and strain hysteresis loop measurements indicate an electric field‐induced phase transition from a nonpolar to a ferroelectric state and vice versa.