Structure and properties of Mg-doped SrBi4Ti4O15 Bi-layered compounds

Hua Hao; Hanxing Liu; Minghe Cao; Shixi Ouyang

doi:10.1007/s11595-007-5675-0

Journal of Wuhan University of Technology Materials Science Edition ›› 2008, Vol. 23 ›› Issue (5) : 675 -677. DOI: 10.1007/s11595-007-5675-0

Article

Structure and properties of Mg-doped SrBi₄Ti₄O₁₅ Bi-layered compounds

Hua Hao ¹^,²^,^{^{^a}}
, Hanxing Liu ¹^,²
, Minghe Cao ²
, Shixi Ouyang ²

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Abstract

The structure and properties of Mg-doped SrBi₄Ti₄O₁₅(SBT) were dicussed. Mg substitution into SBT had two possibilities states with the dopant amount variety. Mg cation substituted mostly into Sr²⁺ and the amount proportion was 68.11%. Mg ion will substitute into Ti ion site in perovskite layer when the doping amount increases. Polarization increases sharply when x=0.1 and then decreases becauses of the domain pinning. The Curie temperature of Mg-doped SBT is about 300 °C and there is a broad diffuse phase transition near T _c with a flat peak near the T _a of SBT.

Keywords

Mg-doped / bismuth layer structure ferroelectrics / ferroelectric properties

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Hua Hao, Hanxing Liu, Minghe Cao, Shixi Ouyang. Structure and properties of Mg-doped SrBi₄Ti₄O₁₅ Bi-layered compounds. Journal of Wuhan University of Technology Materials Science Edition, 2008, 23(5): 675-677 DOI:10.1007/s11595-007-5675-0

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