Electrical conduction of multi-layer ceramic capacitor

Author

Ito, Atsushi ; Yoshimura, Naoko ; Ideguchi, Junichi ; Ogasawara, Tadashi

Author_Institution

Fukushima Nat. Coll. of Technol., Japan

fYear

1991

fDate

8-12 Jul 1991

Firstpage

173

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICPADM.1991.172222

Filename

172222