Proceedings of 2012 21st IEEE Int. Symp. on Applications of Ferroelectrics held jointly with 11th IEEE European Conference on the Applications of Polar Dielectrics and IEEE PFM, ISAF/ECAPD/PFM 2012
- Fecha: 31 October 2012
- ISBN: 9781467326681
- Source Type: Conference Proceeding
- DOI: 10.1109/ISAF.2012.6297835
- Document Type: Conference Paper
This paper presents new results of low frequency pyroelectric behavior and dielectric constant tunability at microwave frequencies of novel lead-free ferro-piezoelectric ceramics with composition (Bi 0.5Na 0.5) 0.96Ba 0.04TiO 3, We show that these ceramics perform well as pyroelectric infrared detectors, with a sensitivity comparable to traditional lead-containing ceramics. For microwave tunable applications, the material presents a promising tunability of the dielectric constant in the range from 100 MHz to 3 GHz when moderate DC electric fields are applied. These results encourage the research on this material for new applications in the fields of microwave devices and infrared optoelectronics. © 2012 IEEE.