Annealing effects for Ca3NbGa3Si2O 14 piezoelectric single crystals grown by micro-pulling-down method

Yuui Yokota, Masanori Kitahara, Shunsuke Kurosawa, Masato Sato, Kazushige Tota, Ko Onodera, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The langasite-type Ca3NbGa3Si2O 14 [CNGS] piezoelectric crystals grown in Air and Ar were annealed under various temperatures and atmospheres and the effects of annealing on various properties were investigated. The absorption peaks around 360 and 500 nm of CNGS crystals grown in Air decreased by the annealing at 1300°C in Ar. On the other hand, the annealing at 1300°C in Air decreased transmittance in the range from 300 to 500 nm for the CNGS crystal grown in Ar. The results suggest that the absorptions around 350 and 500 nm originate from the excess oxygen and the post-annealing can control the oxygen content in the crystals.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
Issue number1
Publication statusPublished - 2013 Jan 1


  • Piezoelectric crystal
  • annealing effect
  • langasite
  • single crystal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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