Title :
Electrical conduction of multi-layer ceramic capacitor
Author :
Ito, Atsushi ; Yoshimura, Naoko ; Ideguchi, Junichi ; Ogasawara, Tadashi
Author_Institution :
Fukushima Nat. Coll. of Technol., Japan
Abstract :
The electrical conduction mechanism of a multilayer ceramic capacitor has been investigated at high temperature. The leakage current was found to increase with the time. Two peaks appeared on the current-time curves. It was considered that the peaks originated from the accumulated space charge. The carrier mobility of the electrical conduction was calculated to be 10-11 to 10-12 cm 2/Vs. The logarithm of the carrier mobility was inversely proportional to the temperature. The logarithm of the conductivity was inversely proportional to the temperature, and the activation energy for the electrical conduction was found to be 1.8 eV. From the carrier mobility and the activation energy for the electrical conduction, the ionic conduction was found to be dominant in the multilayer ceramic capacitor at high temperature
Keywords :
capacitors; ceramics; electric breakdown of solids; ionic conduction in solids; leakage currents; 1.8 eV; accumulated space charge; activation energy; carrier mobility; current-time curves; electrical conduction mechanism; high temperature; ionic conduction; leakage current; multilayer ceramic capacitor; Capacitors; Ceramics; Dielectric materials; Dielectric measurements; Educational institutions; Electrodes; Leakage current; Nickel; Temperature; Voltage;
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.1991.172222
