Hot-stage transmission electron microscopy study of (Na, K)NbO3based lead-free piezoceramics

Shengbo Lu; Zhengkui Xu; Kin Wing Kwok; Helen L.W. Chan

doi:10.1063/1.4891960

Hot-stage transmission electron microscopy study of (Na, K)NbO₃based lead-free piezoceramics

Shengbo Lu, Zhengkui Xu, Kin Wing Kwok, Helen L.W. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

17 Citations (Scopus)

Abstract

Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na0.52K0.48-x)(Nb0.95-xTa0.05)- xLiSbO3, with finely tuned polymorphic phase boundaries (x=0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.

Original language	English
Article number	042904
Journal	Applied Physics Letters
Volume	105
Issue number	4
DOIs	https://doi.org/10.1063/1.4891960
Publication status	Published - 28 Jul 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4891960

http://hdl.handle.net/10397/17275

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abstract = "Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na0.52K0.48-x)(Nb0.95-xTa0.05)- xLiSbO3, with finely tuned polymorphic phase boundaries (x=0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.",

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AU - Xu, Zhengkui

AU - Kwok, Kin Wing

AU - Chan, Helen L.W.

PY - 2014/7/28

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AB - Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na0.52K0.48-x)(Nb0.95-xTa0.05)- xLiSbO3, with finely tuned polymorphic phase boundaries (x=0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.

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Hot-stage transmission electron microscopy study of (Na, K)NbO₃based lead-free piezoceramics

Abstract

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