Crystal growth of Ca3Nb(Ga0.75Al0.25)3O14 piezoelectric bulk single crystal

Author

Yokota, Yuui ; Kamada, Kei ; Kudo, Tetsuo ; Ohashi, Yuji ; Kurosawa, Shunsuke ; Yoshikawa, Akira

Author_Institution

New Ind. Creation Hatchery Center (NICHe), Tohoku Univ., Sendai, Japan

fYear

2015

fDate

24-27 May 2015

Firstpage

102

Lastpage

104

Abstract

We grew a Al 25% substituted Ca₃NbGa₃Si₂O₁₄, Ca₃Nb(Ga_0.75Al_0.25)₃Si₂O₁₄ (CNGAS) bulk single crystal with a diameter of 1 inch by Czochralski (Cz) method. Cracks in the crystal were dramatically decreased by the optimization of temperature gradient. Result of powder X-ray measurement indicated the grown CNGAS bulk single crystal was a single phase of langasite-type phase and lattice parameters, a- and c-axes lengths, decreased by the Al substitution. X-ray rocking curve of polished CNGS specimen indicated the grown CNGS bulk single crystal had great crystallinity.

Keywords

X-ray diffraction; calcium compounds; crystal growth from melt; crystal structure; lattice constants; niobium compounds; piezoelectric materials; piezoelectricity; Ca₃Nb(Ga_0.75Al_0.25)₃Si₂O₁₄; Czochralski method; X-ray rocking curve; a-axes lengths; c-axes lengths; cracks; crystal growth; langasite-type phase; lattice parameters; piezoelectric bulk single crystal; powder X-ray measurement; size 1 inch; temperature gradient; Crystals; Lattices; Periodic structures; Powders; Temperature measurement; Temperature sensors; X-ray scattering; Ca3NbGa3Si2O14; Langasite-type; piezoelectric material; single crystal;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), 2015 Joint IEEE International Symposium on the

Conference_Location

Singapore

Type

conf

DOI

10.1109/ISAF.2015.7172679

Filename

7172679