CERAMIC ELECTRODE MATERIAL AND ELECTRICAL DEVICES FORMED THEREWITH

摘要

Ceramic electrode materials (14, 16) of the invention include ceramic compositions having significant electrical conductivity at room temperature. The ceramic electrodes (14, 16) are coupled to a dielectric (12) to provide electrical devices such as capacitors(10) and transducers (10). The presently known ceramic compositions having room temperature conductivity are ceramic materials that are superconductors at low temperatures and include compositions of the formula: ZBa2-xAxO9-y, where Z is Y, La or any of the lanthanide series elements; A is Na, K, Rb, Cs or Pb; x is in the range 0.0 to 0.2; and y is about 2.0. Compositions having the formula: Bi2Sr3-xCaxCu2Oy, where x is in the range 0.0 to 2.0 and y is in the range 5.0 to 8.0 may also be used as ceramic electrodes (14, 16). The ceramic electrodes (14, 16) have similar perovskite crystalline structures to the dielectrics (12) forming the electrical devices (10) of the invention.