Title :
Shape-controlled crystal growth of Sr3NbGa3Si2O14 and Sr3TaGa3Si2O14 piezoelectric single crystal by micro-pulling-down method
Author :
Yokota, Yuui ; Yoshikawa, Akira ; Futami, Yoshisuke ; Sato, Masato ; Tota, Kzushige ; Onodera, Ko ; Yanagida, Takayuki
Author_Institution :
Inst. for Mater. Res. (IMR), Tohoku Univ., Sendai, Japan
Abstract :
We have grown the shape-controlled Sr3NbGa3Si2O14 (SNGS) and Sr3TaGa3Si2O14 (STGS) langasite-type crystals by the μ-PD method. Columnar-shaped SNGS and STGS crystals were grown using the Pt-Rh crucible with a columnar die in 3 mm diameter. Grown crystals indicated high transparency and approximately 3 mm diameter. Chemical phases of grown crystals were identified as a single phase of langasite-type structure. The lattice parameters of grown crystals were almost consistent with those of crystals grown by Czochralski (Cz) method. In the X-ray rocking curve measurements, the grown crystals indicated equivalent crystallinity to the crystal grown by Cz method.
Keywords :
crystal growth from melt; crystal structure; gallium compounds; lattice constants; niobium compounds; piezoelectricity; strontium compounds; tantalum compounds; transparency; Pt-Rh crucible; Sr3NbGa3Si2O14; Sr3TaGa3Si2O14; X-ray rocking curve measurements; chemical phases; columnar die; columnar-shaped SNGS crystal; columnar-shaped STGS crystal; crystallinity; langasite-type structure; lattice parameters; micropulling-down method; piezoelectric single crystal; shape-controlled SNGS langasite-type crystal; shape-controlled STGS langasite-type crystal; shape-controlled crystal growth; single phase; size 3 mm; transparency; Absorption; Chemicals; Crystals; Lattices; Powders; X-ray scattering; Langasite; Micro-pulling-down Method; Shape-controlled Crystal; Single Crystal; piezoelectric;
Conference_Titel :
Applications of Ferroelectrics (ISAF/PFM), 2011 International Symposium on and 2011 International Symposium on Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1162-6
Electronic_ISBN :
978-1-4577-1161-9
DOI :
10.1109/ISAF.2011.6014150
