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Characterization of nickel manganite NTC thermistor films prepared by aerosol deposition at room temperature

Title data

Schubert, Michaela ; Münch, Christian ; Schuurman, Sophie ; Poulain, Veronique ; Kita, Jaroslaw ; Moos, Ralf:
Characterization of nickel manganite NTC thermistor films prepared by aerosol deposition at room temperature.
In: Journal of the European Ceramic Society. Vol. 38 (February 2018) Issue 2 . - pp. 613-619.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2017.09.005

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationAZ-1159-15

Project financing: Bayerische Forschungsstiftung (BFS)

Abstract in another language

NiMn2O4+δ thermistor thick films have been successfully deposited by the so-called Aerosol Deposition Method (ADM) at room temperature on alumina substrates, Si-wafers, as well as on special planar four-wire interdigital electrode structures for high-precision electrical characterization. The NTCR films are homogeneous, completely dense and scratch resistant. Both as-deposited and tempered, the NTCR films exhibit a cubic spinel structure. Between 25 °C and 90 °C, the NTCR film resistance behaves as it is typical for variable range hopping (VRH) with parabolic density of states. As a result of moderate film tempering, the thermistor constant B and the specific resistance at 25 °C (ρ25) decrease from 4250 K to 4020 K and 65 Ω·m to 40 Ω·m respectively, and are close to bulk values. In combination with the excellent reproducibility of the ρ25 and B values, AD processing of films appears to be a promising alternative for classical ceramic bulk processes.

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
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 20 Nov 2017 09:20
Last Modified: 20 Nov 2017 09:20
URI: https://eref.uni-bayreuth.de/id/eprint/40456