【摘 要】
：
Sr1-xLa2x/3Bi2Nb2O9 (0 ≤ x ≤ 0.2) ceramic samples are prepared by the solid-state reaction method. Their structure, dielectric and ferroelectric properties ar
【机 构】
：
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of S
论文部分内容阅读
Sr1-xLa2x/3Bi2Nb2O9 (0 ≤ x ≤ 0.2) ceramic samples are prepared by the solid-state reaction method. Their structure, dielectric and ferroelectric properties are investigated. The incorporation of La3+ improves the densification and decreases the grain size of the ceramics without changing the crystal structure. The remanent polarization 2Pr increases with increasing La content and reaches a maximum value of 22.8 μC/cm2 at x = 0.125,which is approximately 60% larger than that of pure SrBi2Nb2O9. The Curie temperature keeps almost unchanged at a value of about 440℃. The relationship between doping and the ferroelectric and dielectric properties are discussed.
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