锶、铈和镧共掺杂铈钛酸锶钡陶瓷的固溶性和介电性能的研究

锶、铈和镧共掺杂铈钛酸锶钡陶瓷的固溶性和介电性能的研究韩丹丹;路大勇
【期刊名称】《化学研究与应用》
【年(卷),期】2012(024)001
【摘要】(Ba1-x-0.02SrxLa0.02)(Ti1·yCey)O3(x = 0.05,0.10,0. 15;y=0. 03,0. 04,0. 05) (BSLTC)ceramics were prepared by the cold-pressing ceramic technique. The solid solution and dielectric properties were investigated by X-ray diffraction(XRD)and temperature-dependent dielectric-constant measurements. The XRD results indicated that,BSLTC ceramics show an average cubic perovskite structure. When La = 0.02,the solid solution of
the(Sr.Ce) composition can be improved to(x = 0. 10,y = 0. 04)or(x = 0. 15, y=0. 03 ). The dielectric results indicated that for all samples the Curie temperature is in the vicinity of room temperature and the dielectric peak
is markedly broadened. The ceramic with x = 0. 05 and y = 0. 03 shows higher room-temperature dielectric con-stant(ε'RT≈ 6000) .lower dielectric loss(tanS<0. 02)and meets the U. S. EIA'YSV'high dielectric specification.%
采用冷压陶瓷技术,制备了(Ba1-x-0.02SrxLa0.02)(Ti1-yCey)O3(x=0.05,0.10,0.15；y=0.03,0.04,0.05)(BSLTC)陶瓷,通过X射线衍射(XRD)和介电温谱测试对BSLTC
陶瓷的固溶性和介电性能进行调查.XRD结果表明,所有样品均为立方钙钛矿结
构,La掺杂量为2％时,能够将(Sr,Ce)组合的固溶提高到(x=0.10,y=0.04)或
(x=0.15,y=0.03).介电结果表明,各样品的居里温度都在室温附近,介电峰明显宽化.
其中,(x=0.05,y=0.03)组合的样品显示出最高的室温介电常数(ε’RT≈6000)和低介电损耗(tanδ＜0.02),满足美国EIA“Y5V”高介电陶瓷材料指标.
【总页数】4页(P114-117)
【作者】韩丹丹;路大勇
【作者单位】吉林化工学院材料科学与工程研究中心,吉林长春132022;吉林化工学院材料科学与工程研究中心,吉林长春132022
【正文语种】中文
【中图分类】O614.3
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