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Electron mobility of Sr1-xLaxTiO3 ceramics between 600°C and 1300°C

Title data

Moos, Ralf ; Schöllhammer, Sylvia ; Härdtl, Karl Heinz:
Electron mobility of Sr1-xLaxTiO3 ceramics between 600°C and 1300°C.
In: Applied Physics A. Vol. 65 (1997) Issue 3 . - pp. 291-294.
ISSN 1432-0630
DOI: https://doi.org/10.1007/s003390050581

Official URL: Volltext

Abstract in another language

The conductivities of differently reduced n-type conducting Sr1−xLaxTiO3 ceramics (0.003<x<0.40) were measured between 600°C and 1300°C. The density of electrons in the conduction band was determined from Hall and thermopower measurements. A chemical approach (Ti3+-titration) confirmed these results. The electron mobility was calculated by combining charge carrier density and conductivity data. The temperature dependence of the mobility obeys a power law. Its exponent varies from -1.5 for slightly doped samples (x=0.003) to -2.74 for lanthanum-rich samples (x=0.4) indicating a phonon scattering controlled transport behavior. The mobility data obtained from slightly doped ceramic samples agree very well with Hall mobilities found in undoped SrTiO3 single crystals.

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
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 03 Feb 2015 09:22
Last Modified: 04 Apr 2016 07:37
URI: https://eref.uni-bayreuth.de/id/eprint/6172