首页>
外国专利>
High capacitance multilayer ceramic capacitors - of barium strontium titanate with rare earth additions
High capacitance multilayer ceramic capacitors - of barium strontium titanate with rare earth additions
展开▼
机译:高容量多层陶瓷电容器-钛酸钡锶和稀土的添加
展开▼
页面导航
摘要
著录项
相似文献
摘要
The capacitor material is of general compsn. 80-95% BaTiO3, 5-20% SrTiO3, =0.5 mol.% rate earth oxides (La, Ce or Gd) with Pt or Pd electrodes, sintered at 1300-1400 degrees C in oxidising atmospheres. Individual layer thickness is 50-200 mu. The Sr addition lowers the Curie point, the rare earth oxide forms small semiconducting areas located at grain boundaries. Capacitors are obtained of 1-50 mu Fem-3 with working voltage 3-25V, and tan delta (lKHz 500 x10-4.
展开▼