Title :
High temperature acoustic effects in relaxors PbMg1/3Nb2/3O3 and PbFe1/2Nb1/2O3
Author :
Smirnova, E. ; Sotnikov, A. ; Ktitorov, S. ; Schmidt, H. ; Weihnacht, M.
Author_Institution :
A.F. Ioffe Phys.-Tech. Inst., St. Petersburg, Russia
Abstract :
The longitudinal acoustic wave velocity and attenuation in PbFe1/2Nb1/2O3 and PbMg1/3Nb2/3O3 ceramics have been measured by pulse-echo technique at a frequency of 10 MHz in the temperature range from 200 to 700 K. The anomalies observed in the sound velocity and attenuation behavior versus temperature are correlated with temperature range of relaxor ferroelectric state (PbFe1/2Nb1/2O3) and Burns temperatures.
Keywords :
ferroelectric ceramics; iron compounds; lead compounds; magnesium compounds; relaxor ferroelectrics; ultrasonic dispersion; ultrasonic effects; ultrasonic velocity; Burns temperatures; PMN; PbFe0.5Nb0.5O3; attenuation behavior; ceramics; frequency 10 MHz; high temperature acoustic effects; longitudinal acoustic wave velocity; pulse-echo technique; relaxor ferroelectric state; sound velocity; temperature 200 K to 700 K; thermally; Acoustics; Attenuation; Dielectrics; Relaxor ferroelectrics; Temperature distribution; Temperature measurement; Burns temperature; elastic constants; relaxors; sound velocity and attenuation;
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.2012.6297789
