An investigation of (Na0.5K0.5)NbO3–CaTiO3 based lead-free ceramics and surface acoustic wave devices

Autor:	Ren-Chuan Chang, Yi-Fang Lin, Sheng-Yuan Chu, Yi-Peng Wong, Cheng-Shong Hong
Rok vydání:	2007
Předmět:	Diffraction Materials science business.industry Scanning electron microscope Surface acoustic wave Doping Dielectric Ferroelectricity Piezoelectricity Optics visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material business
Zdroj:	Journal of the European Ceramic Society. 27:4453-4460
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2007.02.218
Popis:	Lead-free (Na0.5K0.5)NbO3 ceramics doped with CaTiO3 (0–3 mol%) have been prepared by the conventional mixed oxide method in this paper. All of the CaTiO3 doped (Na0.5K0.5)NbO3 specimens do not deliquesce as exposed to water for a long time. The samples are characterized by X-ray diffraction analysis, Raman scattering spectra, scanning electron microscopy, and atomic force microscopy. The dielectric, piezoelectric and ferroelectric properties are also investigated. The results show that the addition of CaTiO3 is very effective in preventing the deliquescence and in improving the electric properties of (Na0.5K0.5)NbO3 ceramics. Finally, surface acoustic wave devices based on lead-free ceramics have been successfully fabricated and their characterization is presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a1f573081dfcdb219b28fab7923a6c0b https://doi.org/10.1016/j.jeurceramsoc.2007.02.218 Zobrazit plný text záznamu Full Text from ScienceDirect