Calcium aluminate silicate Ca2Al2SiO7 single crystal applicable to piezoelectric sensors at high temperature

Hiroaki Takeda, Manabu Hagiwara, Hiroaki Noguchi, Takuya Hoshina, Tomoko Takahashi, Nobuhiro Kodama, Takaaki Tsurumi

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Ca2Al2SiO7 (CAS) bulk single crystals were grown by the Czochralski method. Material constants of the crystal were determined over the driving temperature range of a typical combustion pressure sensor. The electrical resistivity at 800°C was found to be of the order of 108 Ωcm. We constructed a measurement system for the direct piezoelectric effect at high temperature, and characterized the crystals in a simulated engine cylinder combustion environment. Output charge signal against applied stress was detected at 700°C. These observations suggest that CAS crystals are superior candidate materials for high temperature for stress sensing.

Original languageEnglish
Article number242907
JournalApplied Physics Letters
Volume102
Issue number24
DOIs
Publication statusPublished - 2013 Jun 17
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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