论文部分内容阅读
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 ℃ and there is a broad diffuse phase transition near Tc with a flat peak near the Ta of SBT.
Mg structure into the 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 Tc with a flat peak near the Ta of SBT.