Growth and properties of Li, Ta modified (K,Na)NbO3 lead-free piezoelectric single crystals

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

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Li, Ta modified (K,Na)NbO3 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 k33 and kt were found to be ∼88% and ∼65%, respectively. The piezoelectric coefficient d33 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.

Original languageEnglish (US)
Pages (from-to)86-90
Number of pages5
JournalPhysica Status Solidi - Rapid Research Letters
Volume8
Issue number1
DOIs
StatePublished - Jan 2014

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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