Title :
Evaluation of polarization of embedded piezoelectrics by the thermal wave method
Author :
Suchaneck, G. ; Hu, W. ; Gerlach, G.
Author_Institution :
Solid State Electron. Lab., Tech. Univ. Dresden, Dresden, Germany
Abstract :
This work demonstrates the benefit of the thermal wave method for the evaluation of the polarization state and the polarization profile, respectively, of embedded piezoelectrics. Two types of samples were investigated: A Low Temperature Cofired Ceramics (LTCC)/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 thermal relaxation time.
Keywords :
ceramic packaging; lead compounds; piezoelectric actuators; piezoelectric transducers; polarisation; titanium compounds; zirconium compounds; LTCC; MFC actuator; PZT; PZT sensor-actuator; embedded piezoelectric; harmonically heated piezoelectric plate; low temperature cofired ceramic; macrofiber composite actuator; modulation frequency; polarization profile evaluation; polarization state evaluation; thermal loss; thermal relaxation time; thermal wave method; Approximation methods; Current measurement; Heating; Optical fiber polarization; Optical fiber sensors; Propagation losses; embedded piezoelectrics; laser intensity modulation; pyroelectric response; thermal wave method;
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.2011.6014120
