(K,Na)NbO3-based piezoelectric single crystals: Growth methods, properties, and applications

Jurij Koruza*, Hairui Liu, Marion Höfling, Mao Hua Zhang, Philippe Veber

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftReview eines Fachbereichs (Review article)Begutachtung

Abstract

Piezoelectric single crystals based on the perovskite ferroelectric system (K,Na)NbO3 have been widely investigated over the past 20 years due to large piezoelectric coefficients, high transition temperatures, low density, and the nontoxic chemical composition. Various crystal growth methods were examined, including high-temperature solution growth, solid-state crystal growth, Bridgman-Stockbarger method, and the floating zone method. Increased understanding of the crystal growth process and post-growth treatments resulted in improved crystal quality and larger sizes. Recently, crystals with high piezoelectric and electromechanical coupling coefficients exceeding 1000 pC/N and 0.90, respectively, were reported. Moreover, their large potential for high-frequency ultrasonic medical imaging was demonstrated. This work provides a review of the development of piezoelectric (K,Na)NbO3-based single crystals, including their growth, defect chemistry, domain structures, electromechanical properties, and applications. Approaches for reducing growth defects, controlling point defects, and domain engineering are discussed. The remaining open issues are presented and an outlook on the future is provided.

Originalspracheenglisch
Seiten (von - bis)990-1016
Seitenumfang27
FachzeitschriftJournal of Materials Research
Jahrgang35
Ausgabenummer8
DOIs
PublikationsstatusVeröffentlicht - 28 Apr. 2020

ASJC Scopus subject areas

  • Allgemeine Materialwissenschaften
  • Physik der kondensierten Materie
  • Werkstoffmechanik
  • Maschinenbau

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