Title :
Relaxor-PT single crystals: Observations and developments
Author :
Zhang, Shujun ; Luo, Jun ; Lee, Ho-Yong ; Shrout, Thomas R.
Author_Institution :
Mater. Res. Inst., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Relaxor-PT single crystals are at the forefront of advanced transducer applications, including medical ultrasound and high power sonar. In this work, we report on recent developments in Relaxor-PT crystals, specifically increased temperature usage and crystallographic and domain engineering relationships. Furthermore, we contrast developments in crystals with respect to both ldquosoftrdquo and ldquohardrdquo piezoelectric ceramics, namely Pb(Zr,Ti)O3 (PZT).
Keywords :
electric domains; ferroelectric Curie temperature; ferroelectric ceramics; ferroelectric coercive field; lead compounds; permittivity; piezoceramics; piezoelectricity; relaxor ferroelectrics; PZT; coercive field; crystallography; curie temperature; dielectric permittivity; domain engineering; electromechanical coupling; hard piezoelectric ceramics; high power sonar; medical ultrasound; relaxor-PT single crystals; soft piezoelectric ceramics; transducer; Biomedical engineering; Biomedical transducers; Crystallography; Crystals; Piezoelectric transducers; Power engineering and energy; Sonar applications; Temperature; Ultrasonic imaging; Ultrasonic transducers;
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2009.5307561
