Growth and properties of Li, Ta modified (K,Na)NbO 3  lead‐free piezoelectric single crystals | Zendy

Huo Xiaoqing | Zendy; Zheng Limei | Zendy; Zhang Shujun | Zendy; Zhang Rui | Zendy; Liu Gang | Zendy; Wang Rui | Zendy; Yang Bin | Zendy; Cao Wenwu | Zendy; Shrout Thomas R. | Zendy

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Growth and properties of Li, Ta modified (K,Na)NbO 3 lead‐free piezoelectric single crystals

Author(s) -

Huo Xiaoqing,

Zheng Limei,

Zhang Shujun,

Zhang Rui,

Liu Gang,

Wang Rui,

Yang Bin,

Cao Wenwu,

Shrout Thomas R.

Publication year - 2014

Publication title -

physica status solidi (rrl) – rapid research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.786

H-Index - 68

eISSN - 1862-6270

pISSN - 1862-6254

DOI - 10.1002/pssr.201308173

Subject(s) - curie temperature , natural bond orbital , orthorhombic crystal system , piezoelectricity , materials science , electromechanical coupling coefficient , analytical chemistry (journal) , atmospheric temperature range , coupling (piping) , phase transition , phase (matter) , crystallography , mineralogy , chemistry , crystal structure , condensed matter physics , thermodynamics , composite material , ferromagnetism , density functional theory , physics , computational chemistry , organic chemistry , chromatography

Li, Ta modified (K,Na)NbO 3 single crystals with the size of 18 mm × 18 mm × 10 mm were successfully grown by top‐seeded solution growth method, with orthorhombic–tetra‐gonal phase transition temperature ∼79 °C and Curie temperature ∼276 °C. The electromechanical coupling factors k 33 and k t were found to be ∼88% and ∼65%, respectively. The piezoelectric coefficient d 33 for the [001] c poled crystals reached 255 pC/N. In addition, the electromechanical coupling factor exhibited high stability over the temperature range of –50 °C to 70 °C, making these lead free crystals good candidates for electromechanical applications. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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