梯度钛酸锶钡（BaxSr1-xTiO3）材料性能的研究  

Study on the properties of gradient ceramic BST

作　　者：朱杰[1] 骆亚娟[1] 孙大志[1] 朱玉丹[1] 金雪琴[1] 

机构地区：[1]上海师范大学生命与环境科学学院化学系,上海200234

出　　处：《功能材料》2007年第A02期691-692,共2页Journal of Functional Materials

摘　　要：采用固相法合成BaxSr1-xTiO3（x=0，0．98，0．95，0．90）单组分和多组分陶瓷，阻抗分析仪测量钛酸锶钡陶瓷25～130℃的介电温谱，对两者的介电特性进行了比较和研究。单组分样品在相变处介电常数出现峰值，而通过热扩散形成的梯度铁电陶瓷能拓宽相变区域，在较宽的温度范围内获得较高的介电常数．使用EPMA电子探针表征梯度材料中元素的分布情况。Ferroelectric ceramics BaxSr1-xTiO3, single component functionally gradient ceramics BST were prepared by solid sintered. Impedance analysis machine measures dieclectric constant of BST in range of 25-130℃ Dielectric property in these two systems were compared and studied. Functionally gradient ceramics BST prepared by thermal diffusion possesses relatively large and stable dielectric constant within a large temperature range because of the wide phase transformation temperature range and EPMA electric gun scans material. In attribute gradient material element distributed situation.

关 键 词：钛酸锶钡 陶瓷 介电性能 梯度材料 

分 类 号：O61[理学—无机化学] TM282[理学—化学]