Microstructure and dielectric properties of nano-grained X7R type BaTiO3 ceramic capacitors sintered by 2.45GHz microwave
Systematic investigation on the effects of microwave sintering on the characteristics of nano-grained BaTiO3 (BT) capacitor materials co-doped with yttrium (Y) and magnesium (Mg) elements was carried out. The granular structure in these materials was observed to be relatively insensitive to the sintering temperature and soaking time. The nano-sized BaTiO3 capacitor materials possessing X7R dielectric constant-temperature (K-T) characteristics have been obtained over a wide range of sintering conditions. Transmission electron microscope (TEM) examinations revealed that the detailed microstructural study of these materials is extremely complicated. The unique K-T properties of the materials are ascribed to the duplex structure in the samples, namely finer grains of paraelectric phase and larger grains of ferroelectric phase.
Cheng-Sao Chen Chen-Chia Chou
Department of Mechanical Engineering, Hwa-Hsia Institute of Technology, 111 Gong Jhuan Road, Chung H Department of Mechanical Engineering, National Taiwan University of Science and Technology, 43 Keelu
国际会议
第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)
杭州
英文
170-174
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）