Synthesis and Characterization the Dielectric Properties of Cobalt Doping Hexagonal BaTiO3

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Title:	Synthesis and Characterization the Dielectric Properties of Cobalt Doping Hexagonal BaTiO3
Authors:	Yu, SW (Yu, Shau-Wei) Yeh, WCV (Yeh, Wang-Chi Vincent) Jou, JL (Jou, Jya-Ler)[ 3 ] Lei, CM (Lei, Chien-Ming)
Contributors:	Dept Chem & Mat Engn
Keywords:	Dielectric properties XPS BaTiO3 hydrostatic pressure co-doping
Date:	2013-01-01
Issue Date:	2014-03-03 11:23:53 (UTC+8)
Abstract:	BaTi1-xCoxO3 ceramics (x = 0.05 approximate to 0.25) have been synthesized with the solid state method and the Co-doping samples were formed hexagonal structure with x < 0.25. The XPS spectra show the two Co(2+)2p(3/2) and Co(2+)2p(1/2) peaks in full doping range, which indicates hexagonal BaTi1-xCoxO3 are stable by Co2+, not Co3+-ion. Although the radius of Co2+-ion is larger than the radius of Ti4+-ion, the volume of unit cell is still decreasing with Co concentration increasing due to oxygen vacancy increasing, which can induce the hydrostatic pressure in this system. The Qxf value and K value are both decreasing with Co-doping level increasing due to hydrostatic pressure increasing.
Relation:	FERROELECTRICS Volume: 456 Issue: 1 Pages: 31-37
Appears in Collections:	[Department of Chemical & Materials Engineering] journal articles

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