利用SEAM技术对电畴结构的直接观察  

DIRECT OBSERVATION OF DOMAIN STRUCTURE BY SEAM

作　　者：张冰阳[1] 江福明[1] 杨阳[1] 惠森兴[1] 姚烈[1] 殷庆瑞[1] 

机构地区：[1]中国科学院上海硅酸盐研究所

出　　处：《硅酸盐学报》1997年第2期204-208,共5页Journal of The Chinese Ceramic Society

基　　金："863"高技术;国家自然科学基金

摘　　要：利用国际上近几年发展起来的扫描电子声显微镜技术，对ＢａＴｉＯ３铁电陶瓷材料及其单晶进行电子声成像实验。结果表明：利用扫描电子声显微镜技术在不对样品表面进行任何处理的情况下，可以直接对电畴结构进行观察。实验结果显示出扫描电子声显微成像技术在对铁电材料的电畴结构微观分析中的优越性，为在微观领域分析研究铁电材料的电畴结构提供了一种新的观察与分析手段。Direct observation of domain structure of ferroelectric ceramics and single crystal BaTiO 3 was made with a new microscopically imaging tool——scanning electron acoustic microscope(SEAM).The results show that the SEAM technique can be used directly to observe the domain structure of ferroelectric ceramics and single crystal materials without any treatment for test samples.The thermal wave coupling mechanism has no effect on the electron acoustic imaging of ferroelectric materials,while the change of electric constants in this materials has a certain effect.The experimental results also show that the SEAM technique has advantage over the other manners in observing domain structure of ferroelectrics.It offers a new method to observe and study domain structure in a micro scale.

关 键 词：扫描电子显微镜 钛酸钡陶瓷 电畴 陶瓷结构 

分 类 号：TQ174.1[化学工程—陶瓷工业]