Evaluation of polarization of embedded piezoelectrics by the thermal wave method

Author

Suchaneck, Gunnar ; Eydam, Agnes ; Hu, Wenguo ; Kranz, Burkhart ; Drossel, Welf-Guntram ; Gerlach, Gerald

Author_Institution

Solid State Electron. Lab., Tech. Univ. Dresden, Dresden, Germany

Volume

59

Issue

9

fYear

2012

fDate

9/1/2012 12:00:00 AM

Firstpage

1950

Lastpage

1954

Abstract

This work demonstrates the benefit of the thermal wave method for the evaluation of the polarization state of embedded piezoelectrics. Two types of samples were investigated: A low-temperature co-fired ceramics (LTCC)/lead zirconate titanate (PZT) sensor-actuator and a macro-fiber composite (MFC) actuator. At modulation frequencies below 10 Hz, the pyroelectric response was governed by thermal losses to the embedding layers. Here, the sample behavior was described by a harmonically heated piezoelectric plate exhibiting heat losses to the environment characterized by a single thermal relaxation time.

Keywords

dielectric polarisation; lead compounds; piezoceramics; pyroelectricity; MFC actuator; PZT; embedded piezoelectric polarization; embedding layer; lead zirconate titanate; low temperature cofired ceramic; macrofiber composite; pyroelectric response; sensor-actuator; thermal loss; thermal relaxation time; thermal wave method; Actuators; Finite element methods; Frequency modulation; Heating; Measurement by laser beam; Temperature measurement; Thermal conductivity;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2012.2412

Filename

6306014