Nonlinear relaxational polarization in aluminum oxide

Author

Kankate, L. ; Gratsov, A. ; Kliem, H.

Author_Institution

Inst. of Electr. Eng. Phys., Saarland Univ., Saarbrucken, Germany

Volume

22

Issue

2

fYear

2015

fDate

Apr-15

Firstpage

1220

Lastpage

1231

Abstract

Frequency and electric field dependent measurements of the complex capacitance on Al₂O₃ based metal-insulator-metal capacitors were conducted. A nonlinear relaxational polarization in Al₂O₃ was investigated systematically by means of varying the thickness of the dielectric and characterizing samples at various temperatures. Employing the asymmetric double well potential model, where the charges fluctuate between two potential minima, we show that the relaxational polarization in metal oxide can be interpreted.

Keywords

MIM devices; aluminium compounds; capacitance; capacitors; dielectric polarisation; dielectric relaxation; Al₂O₃; aluminum oxide; asymmetric double well potential model; capacitance; charge fluctuation; dielectric samples; electric field dependent measurements; frequency dependent measurements; metal oxide; metal-insulator-metal capacitors; nonlinear relaxational polarization; Aluminum oxide; Capacitance; Dielectrics; Electric fields; Electrodes; Frequency measurement; Temperature measurement; Kohlrausch relaxations; Relaxational polarization; asymmetric double well potential; capacitance;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2015.7076825

Filename

7076825