Title :
Effect of processing on surface acoustic wave properties of a modified lead titanate ceramic
Author :
Millar, C.E. ; Pedersen, L. ; Pardo, L. ; Ricote, J. ; Alemany, C. ; Jimenez, B. ; Feuillard, G. ; Lethiecq, M.
Author_Institution :
Ferroperm AS, Kvistgard, Denmark
Abstract :
Piezoceramic substrates are of interest for many surface acoustic wave (SAW) applications, such as chemical and biological sensors and TV filters. For these applications the reproducibility of the SAW properties is important. Here, the effect of a variety of ceramic processing conditions on the microstructure and SAW properties of the ceramics is examined to determine the sensitivity of the properties to processing. The study includes, the influence of milling time, sintering conditions and a post sintering HIP treatment. Microstructure, bulk and SAW properties are characterised and processing-microstructure-property relations examined
Keywords :
acoustic materials; crystal microstructure; ferroelectric materials; hot pressing; lanthanum compounds; lead compounds; machining; piezoceramics; piezoelectric devices; samarium compounds; sintering; surface acoustic wave devices; (PbSmLa)(TiMn)O3; (PbSmLa)(TiMn)O3 ceramic; TV filters; biological sensors; chemical sensors; microstructure; milling time; piezoceramic substrates; post sintering HIP treatment; processing effects; sintering conditions; surface acoustic wave properties; Acoustic waves; Ceramics; Chemical and biological sensors; Filters; Microstructure; Milling; Piezoelectric materials; Reproducibility of results; Surface acoustic waves; TV;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522318
