Domain switching in lead magnesium niobate-lead titanate polycrystalline sheets at single grain level

Autor:	Wan Y. Shih, Wei-Heng Shih, Hongyu Luo, Yang-Fang Chen, Wei-Sheng Su
Rok vydání:	2007
Předmět:	Materials science Cantilever Physics and Astronomy (miscellaneous) Condensed matter physics Polarization (waves) Piezoelectricity chemistry.chemical_compound Hysteresis Piezoresponse force microscopy Nuclear magnetic resonance chemistry Electric field Lead titanate Crystallite
Zdroj:	Applied Physics Letters. 91:112903
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.2778359
Popis:	The authors provide direct evidence of non-180° domain switching in the piezoelectric response of substrate-free 40μm thick polycrystalline [Pb(Mg1∕3Nb2∕3)O3]0.63(PbTiO3)0.37 (PMN-37PT) sheets under dc electric fields through piezoresponse force microscopy (PFM) at the single grain level. The sheet’s polarization preferred pointing in the planar direction which was switched to the normal direction at electric field ranging between 1.3 and 1.9kV∕cm. An independent d31 measurement of PMN-37PT sheets deduced from the axial tip displacement measurements of a 4mm long PMN-PT/copper cantilever showed enhanced d31 values that peaked at –2700pm∕V in the same range of electric field, consistent with the PFM observation.
Databáze:	OpenAIRE
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