Title :
High temperature piezoelectric single crystals: Sr3NbGa3Si2O14, Sr3TaGa3Si2O14 and GdCa4O(BO3)3
Author :
Sotnikov, A. ; Schmidt, H. ; Weihnacht, M. ; Hengst, M. ; Möckel, R. ; Götze, J. ; Heide, G.
Author_Institution :
IFW Dresden, Dresden, Germany
Abstract :
We have successfully grown high quality piezoelectric single crystals of Sr3NbGa3Si2O14 (SNGS), Sr3TaGa3Si2O14 (STGS) and GdCa4O(BO3)3 (GdCOB) by the Czochralski technique. Dielectric, elastic and piezoelectric constants of SNGS and STGS were measured in a temperature range from 25°C to 400°C. Some parameters of SNGS, STGS and GdCOB crystals important for acoustic applications have been investigated also at temperatures up to 940°C. The strong piezoelectric activity of all investigated materials is kept at least up to this high temperature.
Keywords :
acoustic applications; crystal growth from melt; elastic constants; gadolinium compounds; gallium compounds; niobium compounds; permittivity; piezoelectric materials; strontium compounds; tantalum compounds; Czochralski technique; GdCa4O(BO3)3; Sr3NbGa3Si2O14; Sr3TaGa3Si2O14; acoustic applications; dielectric constants; elastic constants; high quality piezoelectric single crystals; high temperature piezoelectric single crystals; piezoelectric constants; strong piezoelectric activity; temperature 25 degC to 400 degC; Crystals; Dielectric measurements; Temperature dependence; Temperature distribution; Temperature measurement; dielectric; elastic; piezoelectric properties; pizoelectric single crystals;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297781
