Materials for high temperature piezoelectric transducers
1998; Elsevier BV; Volume: 3; Issue: 5 Linguagem: Inglês
10.1016/s1359-0286(98)80009-0
ISSN1879-0348
Autores Tópico(s)Microwave Dielectric Ceramics Synthesis
ResumoThe most significant advance in this field in the past year has been the demonstration that single-crystal langasite, La3Ga5SiO14, can be used, at least at high frequencies, at temperatures up to 1000°C. New evidence suggests that domain-wall contributions to the piezoelectric response of bismuth-titanate-based high temperature ferroelectric ceramics may be controlled using suitably chosen dopants. Modified bismuth titanate compositions are interesting for sensor applications in the medium temperature range (up to 500°C).
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