Title :
The dielectric properties on Pb-complex perovskite with low firing temperature
Author :
Chae, Hong-In ; Lim, Kee-Joe ; Lee, Jeong-Goo ; Lee, Sang-Seok ; Choy, Tae-Goo
Author_Institution :
Dept. of Electr. Eng., Chungbuk Nat. Univ., Seoul, South Korea
Abstract :
The authors propose new dielectric compositions and their preparation method. The dielectric compositions comprise lead magnesium niobate, lead zinc niobate, and lead lithium tungstate (PMN-PZN-PLW). They can be fired at a temperature between 1000 and 1050°C, and can thus be used with high-silver-content electrodes in manufacturing MLCCs (multilayer ceramic capacitors). The dielectric constant peak is shifted near room temperature with increasing PMN content, and the optimum composition is 0.77PMN-0.27PZN-0.03PLW with 1 wt.% excess PbO addition. These compositions have dielectric constants in the range of 8000~12000, the dissipation factor is less than 2%, and the temperature coefficient of capacitance is +5~-47%. These dielectric properties are particularly suitable for Z5U MLCC
Keywords :
capacitors; dielectric materials; dielectric properties of solids; lead compounds; magnesium compounds; permittivity; sintering; 1000 to 1050 degC; MLC capacitor manufacture; PMN-PbZnO3NbO3-PbLiO3WO3; Pb-complex perovskite; PbMgO3NbO3-PbZnO3NbO3-PbLiO3WO3; PbO; Z5U; dielectric compositions; dielectric constant; dielectric properties; dissipation factor; low firing temperature; multilayer ceramic capacitors; temperature coefficient of capacitance; Dielectric constant; Electrodes; Firing; Lead; Lithium; Magnesium; Manufacturing; Niobium compounds; Temperature; Zinc;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-87942-568-7
DOI :
10.1109/ICPADM.1991.172102
