Title :
Study on the dielectric properties of (Sr.Ca)TiO3-based ceramics for the capacitor materials
Author :
Choi, Woon-Shik ; Kim, Jin-Sa ; Kim, Chung-Hyeok ; Lee, Joon-Ung
Author_Institution :
Daebul Univ., Chonnam, South Korea
Abstract :
The dielectric properties of (Sr.Ca)TiO3-based boundary layer (BL) capacitor materials were investigated. (Sr.Ca)TiO3-based compositions were fired at 1350°C in a N2 atmosphere to get the based semiconductive ceramics. The Nb2O5 was chosen for semiconductor of grain. The metal oxides of CuO were printed on the semiconductive ceramics, and those were fired at 1200°C for the subsequent grain boundary diffusion. The grain size of the semiconductive ceramics was about 20 μm and the apparent permittivity of the resulting material varied between 2×104 and 3×104
Keywords :
calcium compounds; ceramic capacitors; grain boundary diffusion; grain size; permittivity; semiconductor materials; strontium compounds; (SrCa)TiO3-Nb2O5; 1200 C; 1350 C; boundary layer capacitor material; dielectric properties; firing; grain boundary diffusion; grain size; permittivity; semiconductive ceramic; Atmosphere; Capacitors; Ceramics; Composite materials; Dielectric materials; Grain boundaries; Grain size; Niobium; Permittivity; Semiconductor materials;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.616582
