Effect on Electrical Properties of Barium and Strontium Additions in the Lead Lanthanum Zirconate Stannate Titanate System

Autor:	Seung-Eek Park, Shoko Yoshikawa, Kelley Markowski, L. Eric Cross
Rok vydání:	2005
Předmět:	Materials science Stannate Transition temperature Inorganic chemistry Analytical chemistry chemistry.chemical_element Barium Dielectric Atmospheric temperature range Ferroelectricity Titanate Hysteresis chemistry Materials Chemistry Ceramics and Composites
Zdroj:	Journal of the American Ceramic Society. 80:407-412
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1997.tb02845.x
Popis:	The effect of barium (Ba) and strontium (Sr) additions on the electrical properties of lead lanthanum zirconate stannate titanate (PLZST) ceramics and their electrically induced phase change behavior was examined. Sr additions decreased both the ferroelectric (FE) ↔ antiferroelectric (AFE) transition temperature (T AFE-FE ) and the temperature of the maximum dielectric constant (T MAX ). This indicates that Sr additions stabilize the AFE phase. Along with B-site modifications Sr additions can be used to decrease the switching field and hysteresis. Ba additions caused the temperature range of the AFE phase to narrow by increasing T AFE-FE and decreasing T MAX . This behavior indicates an ability to lower the switching field and suppress hysteresis. Using a combination of both A-site and B-site modifications it is possible to tailor the properties (for example, switching field, hysteresis, and operating temperature range) of this group of phase change materials to meet the requirements of specific applications.
Databáze:	OpenAIRE
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