Title :
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
Abstract :
We grew a Al 25% substituted Ca3NbGa3Si2O14, Ca3Nb(Ga0.75Al0.25)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(Ga0.75Al0.25)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;
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
DOI :
10.1109/ISAF.2015.7172679
