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Title: Relaxor behaviour of K<inf>0.5</inf>Bi<inf>0.5</inf>NbO<inf>3</inf>- BiScO<inf>3</inf>ceramics
Authors: Chatchai Kruea-In
Gobwute Rujijanagul
Fang Yuan Zhu
Steven J. Milne
Keywords: Physics and Astronomy
Issue Date: 14-May-2012
Abstract: Dielectric properties of (1 - x)K0.5Bi0.5TiO3- xBiScO3ceramics have been studied for compositions x < 0.5. Single-phase solid solutions occurred for compositions x < 0.25. A frequency-dependent dielectric relaxation was observed, consistent with relaxor behaviour. This gave rise to a relatively stable dielectric permittivity at high temperatures, for example,r2880 ± 3, between temperatures of 500 and 700 K (1 kHz) for composition x = 0.15. This consistency in relative permittivity occurs at higher temperatures than for other lead-free dielectrics. Parameters from Vogel-Fulcher analysis are compared to other relaxors. © 2012 American Institute of Physics.
ISSN: 00036951
Appears in Collections:CMUL: Journal Articles

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