Journal article

Authors list: Janek, J; Mogwitz, B; Beck, G; Kreutzbruck, M; Kienle, L; Korte, C

Publication year: 2004

Pages: 179-205

Journal: Progress in Solid State Chemistry

Volume number: 32

Issue number: 3-4

ISSN: 0079-6786

DOI Link: https://doi.org/10.1016/j.progsolidstchem.2005.05.002

Publisher: Elsevier

Abstract: 
The magnetoresistance (MR) effect of the low temperature phase of silver selenide (alpha-Ag2+delta Se) is studied with both bulk and thin film samples within a wide range of composition, i.e. metal content. Homogeneous bulk silver selenide shows the ordinary magnetoresistance (OMR) effect, which can be explained by the two-band model of a classical semiconductor. Heterogeneous silver selenide forms a semi-conductor/metal dispersion which shows completely different MR effects, depending on the microstructure of the samples. XRD and TEM studies of thin film samples prove the two-phase character of the silver-rich material, and also offer new insights into the microstructure of the low temperature phase of silver selenide: Two selenide phases appear and form a "nano-parquet" of two coexisting selenide phases with both coherent twin boundaries and incoherent large angle grain boundaries. This microstructure is discussed as the possible reason for the observed MR effects.

Harvard Citation style: Janek, J., Mogwitz, B., Beck, G., Kreutzbruck, M., Kienle, L. and Korte, C. (2004) The magnetoresistance of metal-rich Ag2+xSe - A prototype nanoscale metal/semiconductor dispersion?, Progress in Solid State Chemistry, 32(3-4), pp. 179-205. https://doi.org/10.1016/j.progsolidstchem.2005.05.002

APA Citation style: Janek, J., Mogwitz, B., Beck, G., Kreutzbruck, M., Kienle, L., & Korte, C. (2004). The magnetoresistance of metal-rich Ag2+xSe - A prototype nanoscale metal/semiconductor dispersion?. Progress in Solid State Chemistry. 32(3-4), 179-205. https://doi.org/10.1016/j.progsolidstchem.2005.05.002