Title :
Dielectric, elastic and piezoelectric properties of melilite-type SrGdGa3O7 single crystals at elevated temperature
Author :
Chuanying Shen ; Huaijin Zhang ; Yuanyuang Zhang ; Jiyang Wang ; Shujun Zhang ; Shrout, Thomas R.
Author_Institution :
State Key Lab. of Crystal Mater., Shandong Univ., Jinan, China
Abstract :
The full matrix material constants for melilite-type SrGdGa3O7 crystals were determined using resonance method, with piezoelectric coefficient d14 and coupling factor k14 being on the order of 14.6 pC/N and 23.8%, respectively. The electrical resistivity at 600 °C was measured and found to be on the order of 1.0×106 and 1.7×107 Ohm·cm along physical X- and Z- directions. The dielectric, elastic and piezoelectric constants were studied over a wide temperature range, from 25 to 600 °C, with the piezoelectric variation less than 20%, demonstrating SrGdGa3O7 crystals a potential material for high temperature piezoelectric sensors.
Keywords :
elastic constants; electrical resistivity; gadolinium compounds; permittivity; piezoelectric materials; strontium compounds; SrGdGa3O7; dielectric constants; elastic constants; electrical resistivity; high temperature piezoelectric sensors; melilite-type single crystals; piezoelectric coefficient; piezoelectric coupling factor; temperature 25 C to 600 C; Crystals; Dielectrics; Temperature; Temperature measurement; Temperature sensors; Single crystals; elevated temperature; piezoelectric;
Conference_Titel :
Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM), 2014 Joint IEEE International Symposium on the
Conference_Location :
State College, PA
DOI :
10.1109/ISAF.2014.6923007
