Title :
Shape-controlled crystal growth of Sr3NbGa3Si2O14 and Sr3TaGa3Si2O14 piezoelectric crystals by the micro-pulling-down method
Author :
Yokota, Yuui ; Sato, Masato ; Futami, Yoshisuke ; Tota, Kazushige ; Onodera, Ko ; Yanagida, Takayuki ; Yoshikawa, Akira
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
9/1/2012 12:00:00 AM
Abstract :
We grew column-shaped Sr3NbGa3Si2O14 (SNGS) and Sr3TaGa3Si2O14 (STGS) langasite-type piezoelectric single crystals by the micro-pulling-down (μ-PD) method. 3-mm-diameter SNGS and STGS crystals were grown using a Pt-Rh crucible with a 3-mm-diameter columnar die. According to X-ray rocking curve measurements, the grown crystals had crystallinity equivalent to that of crystals grown by the Czochralski (Cz) method. The crystals were single-phase materials with langasite-type crystal structure. The lattice parameters of the grown crystals were almost consistent with those of crystals grown by the Cz method.
Keywords :
crystal growth from melt; crystal structure; gallium compounds; niobium compounds; piezoelectric materials; silicon compounds; strontium compounds; tantalum compounds; Czochralski method; SNGS crystals; STGS crystals; Sr3NbGa3Si2O14; Sr3TaGa3Si2O14; X-ray rocking curve measurements; langasite-type crystal structure; langasite-type piezoelectric single crystals; lattice parameters; micropulling-down method; shape-controlled crystal growth; single-phase materials; size 3 mm; Crystals; Lattices; Periodic structures; Powders; Scanning electron microscopy; X-ray diffraction;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2012.2397
