PROCESSING AND PROPERTIES OF Na0.5Bi0.5TiO3 PIEZOELECTRIC CERAMICS MODIFIED WITH La, Mn AND Fe

Autor:	Torsten Granzow, Elena Aksel, Kyle A. Calhoun, Jacob L. Jones, Humberto M. Foronda, Silke Schaab
Rok vydání:	2010
Předmět:	Piezoelectric coefficient Materials science Dopant chemistry.chemical_element Mineralogy Manganese Coercivity Piezoelectricity Ferroelectricity chemistry visual_art visual_art.visual_art_medium Lanthanum General Materials Science Ceramic Composite material
Zdroj:	Functional Materials Letters. :45-48
ISSN:	1793-7213 1793-6047
DOI:	10.1142/s1793604710000877
Popis:	Although a great deal of work has been done to understand defect chemistry in "soft" and "hard" PZT-based materials, there is little understanding of how defect chemistry influences the properties of lead-free piezoelectric materials. This paper reports a systematic investigation of doping on the ferroelectric and piezoelectric properties in Na 0.5 Bi 0.5 TiO 3 (NBT)-based ceramics. NBT-based ceramics have been synthesized by traditional solid state routes using several different dopants including lanthanum, manganese, and iron in 1 mol%. The addition of iron and manganese lead to an increase in the coercive field (E c ), a decrease in the piezoelectric coefficient (d33), and an increase in the thermal depoling temperature (T depole ), similar to the behavior of "hard" PZT. Lanthanum, on the other hand, leads to a decrease in the E c , an increase in d33, and a decrease in T depole similar to that seen in "soft" PZT.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd82fb5316ef9f5abfb57ce6b334a57f https://doi.org/10.1142/s1793604710000877 Zobrazit plný text záznamu