Electro-elastic characteristics of KCsMoP2O9 crystal: Exploiting strong piezoelectricity for guided wave transducer applications

Mengdi Fan; Guangda Wu; Huaiyu Wu; Nicholas Garcia; Xiaoning Jiang; Shujun Zhang; Xian Zhao; Fapeng Yu

doi:10.1016/j.jmat.2024.01.011

Journal of Materiomics (Jan 2025)

Electro-elastic characteristics of KCsMoP2O9 crystal: Exploiting strong piezoelectricity for guided wave transducer applications

Mengdi Fan,
Guangda Wu,
Huaiyu Wu,
Nicholas Garcia,
Xiaoning Jiang,
Shujun Zhang,
Xian Zhao,
Fapeng Yu

Affiliations

Mengdi Fan: Key Laboratory of Laser & Infrared System, Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
Guangda Wu: Key Laboratory of Laser & Infrared System, Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China; Center for Optics Research and Engineering, Shandong University, Qingdao, 266237, Shandong, China; Corresponding author. Key Laboratory of Laser & Infrared System, Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
Huaiyu Wu: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, 27695, USA
Nicholas Garcia: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, 27695, USA
Xiaoning Jiang: Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, 27695, USA
Shujun Zhang: Institute for Superconducting and Electronic Materials, Australia Institute of Innovative Materials, University of Wollongong, Wollongong, 2500, Australia
Xian Zhao: Key Laboratory of Laser & Infrared System, Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China; Center for Optics Research and Engineering, Shandong University, Qingdao, 266237, Shandong, China
Fapeng Yu: Key Laboratory of Laser & Infrared System, Ministry of Education, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China; Corresponding author.

DOI: https://doi.org/10.1016/j.jmat.2024.01.011
Journal volume & issue: Vol. 11, no. 1
p. 100836

Abstract

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A new piezoelectric crystal, KCsMoP2O9 (KCMP), was successfully grown by the Kyropoulos method. The electro-elastic properties of KCMP crystal were characterized by the impedance method. The full set of elastic constants was determined by solving the Christoffel equation. Remarkably, the crystal exhibits a large face-shear piezoelectric coefficient of d14 = 16.2 pC/N, surpassing that of the extensively studied ordered langasite crystal Ca3TaGa3Si2O14 (d14 = 10.4 pC/N). A fundamental shear horizontal (SH0) wave piezoelectric transducer was developed, leveraging the face-shear-mode of KCMP wafers. Finite element simulations have conclusively demonstrated the KCMP-based transducer's exceptional ability to efficiently excite and capture the pure SH0 wave, independently along two orthogonal main directions (0°/180° and 90°/270°). These results were subsequently corroborated through experimental validation at temperatures up to 300 °C, highlighting the considerable promise of KCMP crystals for utilization in non-destructive testing and structural health monitoring applications.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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