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

fYear

2014

fDate

12-16 May 2014

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISAF.2014.6923007

Filename

6923007