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Title: X-ray and dielectric studies of ferroelectric phase in the Ba1-x(Yb0.5 Na0.5)x TiO3 system for low doping level
Authors: Khemakhem, L.
Kriaa, I.
Derbel, M.
Abdelmoula, N.
Keywords: Perovskite;Lead-free ceramics;Dielectric;Ferroelectric;Relaxor;Ferroelectricity;Electronic ceramics
Issue Date: 2009
Publisher: Universiti Malaysia Perlis
Citation: International Journal of Nanoelectronics and Materials, vol.2 (2), 2009, pages 137-145.
Abstract: Ceramics of solid solution Ba1-x(Yb0.5Na0.5)xTiO3 were sintered in the temperature range 1220-1400°C. Dielectric properties of ceramics belonging to the whole composition domain were investigated in a broad range of temperatures (75-450 K) and frequencies (0.1-100 kHz). These ceramics were prepared using the conventional mixed-oxide technique. The temperature dependence of the dielectric constant of these ceramics were investigated. The rombohedral–orthorhombic and orthorhombic-quadratic perovskite transitions are characterized by two weak peaks but the tetragonal-cubic or ferroelectric-paraelectric one is characterized by a pronounced peak with weak frequency dispersion. Excellent dielectric properties have been obtained. The single phase of these prepared ceramics was characterizedby X-ray diffraction.
Description: Link to publisher's homepage at http://ijneam.unimap.edu.my/
URI: http://hdl.handle.net/123456789/7122
ISSN: 1985-5761 (Printed)
1997-4434 (Online)
Appears in Collections:International Journal of Nanoelectronics and Materials (IJNeaM)

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