Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics

Shengbo Lu; Zhengkui Xu; K. W. Kwok; Helen L. W. Chan

doi:10.1063/1.4891960

Hot-stage transmission electron microscopy study of (Na, K)NbO₃ based lead-free piezoceramics

Shengbo Lu, Zhengkui Xu, K. W. Kwok, Helen L. W. Chan

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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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, (Na_0.52K_0.48-x)(Nb_0.95-xTa_0.05)-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

Publisher's Copyright Statement

COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Shengbo Lu, Zhengkui Xu, K. W. Kwok, and Helen L. W. Chan , "Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics", Appl. Phys. Lett. 105, 042904 (2014) and may be found at https://doi.org/10.1063/1.4891960.

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title = "Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics",

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 - Chan, Helen L. W.

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N2 - 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.

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)NbO₃ based lead-free piezoceramics

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Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics

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Erratum: Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics (Applied Physics Letters (2014) 105 (042904))

Cite this

Hot-stage transmission electron microscopy study of (Na, K)NbO₃ based lead-free piezoceramics

Erratum: Hot-stage transmission electron microscopy study of (Na, K)NbO₃based lead-free piezoceramics (Applied Physics Letters (2014) 105 (042904))