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Oxygen partial pressure dependency of the electrical conductivity of aerosol deposited alumina films between 650 °C and 900 °C

Title data

Schubert, Michael ; Leupold, Nico ; Kita, Jaroslaw ; Moos, Ralf:
Oxygen partial pressure dependency of the electrical conductivity of aerosol deposited alumina films between 650 °C and 900 °C.
Universität Bayreuth / Lehrstuhl für Funktionsmaterialien
In: Materials Letters. Vol. 245 (June 2019) . - pp. 208-210.
ISSN 0167-577X
DOI: https://doi.org/10.1016/j.matlet.2019.02.094

Project information

Project title:
Project's official titleProject's id
No informationAZ-1055-12

Project financing: Bayerische Forschungsstiftung (BFS)

Abstract in another language

The dependence of the electrical conductivity on the oxygen partial pressure of alumina films produced by the Aerosol Deposition Method (ADM) was investigated. The samples were contacted in a three-electrode setup according to DIN IEC 60093:1993-12 for high insulating materials and the conductivity was measured as a function of the oxygen partial pressure between 650 °C and 900 °C. The conductivity increases with the oxygen partial pressure and thus shows p-type behavior. Constant final values are reached even at these low temperatures. In the double logarithmic representation, a slope of approx. 3/16 can be determined. Following a defect chemical approach for M2O3 (M represents a metal) and the assumption of Schottky disorder, a defect chemical model can be established.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 18 Mar 2019 07:27
Last Modified: 18 Mar 2019 07:27
URI: https://eref.uni-bayreuth.de/id/eprint/47986