Dependence of the breakdown strength on thickness and permittivity

Author

Neusel, Claudia ; Schneider, Gerold A.

Author_Institution

Inst. of Adv. Ceramics, Hamburg Univ. of Technol., Hamburg, Germany

fYear

2013

fDate

June 30 2013-July 4 2013

Firstpage

31

Lastpage

35

Abstract

The dielectric breakdown strengths of Al₂O₃ and BaTiO₃ ceramics have been investigated in terms of thickness and permittivity dependence. From the obtained results, it is possible to define a thickness dependent breakdown strength regime. For bulk samples it will be shown, that the breakdown strength is inversely proportional to the permittivity. Furthermore space charge limited conduction (SCLC) can be identified as dominating conduction mechanism in Al₂O₃ and BaTiO₃ ceramics. Based on the experimental findings a recently developed Griffith type energy release rate model for tubular channels can be applied [1].

Keywords

alumina; barium compounds; ceramics; electric breakdown; permittivity; space-charge-limited conduction; Al₂O₃; BaTiO₃; Griffith type energy release rate model; alumina ceramic; conduction mechanism; dielectric breakdown strengths; permittivity dependence; space charge limited conduction; thickness dependence; thickness dependent breakdown strength regime; tubular channels; Aluminum oxide; Ceramics; Dielectric breakdown; Dielectrics; Permittivity; Voltage measurement; Al2O3; BaTiO3; breakdown strength; permittivity; thickness dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics (ICSD), 2013 IEEE International Conference on

Conference_Location

Bologna

ISSN

2159-1687

Print_ISBN

978-1-4799-0807-3

Type

conf

DOI

10.1109/ICSD.2013.6619786

Filename

6619786