Journalartikel

Jahr der Veröffentlichung: 2010

Seiten: 1770-1778

Zeitschrift: Solid State Sciences

Bandnummer: 12

Heftnummer: 10

ISSN: 1293-2558

DOI Link: https://doi.org/10.1016/j.solidstatesciences.2010.07.029

Verlag: Elsevier

Abstract: 
Dispersions of very small non-magnetic metal particles or inclusions in a non-magnetic semiconductor matrix are well known to produce unusually large and linear magnetoresistance effects. So far these materials were limited to the binary silver-rich chalcogenides Ag2Se and Ag2Te. In this contribution Ag3AuTe2 was selected as a first candidate for a ternary matrix material, thus offering enhanced capabilities for the generation of heterogeneous microstructure and spatially varying composition on the nanoscale. In gold-rich Ag3Au1.1Te2 two kinds of inhomogeneities are present, namely Au deposits with a size on the micron scale and an inhomogeneous distribution of Au and Ag within the matrix. The matrix consists of micron-sized grains with the structure type of Ag3AuTe2 as studied by electron microscopy. Like the binary silver chalcogenide phases, the material also shows a large and linear magnetoresistance effect. The transversal magnetoresistance effect was measured between 20 K and 270 K in magnetic fields up to B = 51. The results are discussed on the basis of existing models for a large and linear positive MR effect.

Harvard-Zitierstil: Kienle, L., Duppel, V., Lembke, G., Mogwitz, B., Janek, J., von Kreutzbruck, M., et al. (2010) Microstructure and magnetoresistance of heterogeneous gold-rich Ag3Au1.1Te2, Solid State Sciences, 12(10), pp. 1770-1778. https://doi.org/10.1016/j.solidstatesciences.2010.07.029

APA-Zitierstil: Kienle, L., Duppel, V., Lembke, G., Mogwitz, B., Janek, J., von Kreutzbruck, M., & Simon, A. (2010). Microstructure and magnetoresistance of heterogeneous gold-rich Ag3Au1.1Te2. Solid State Sciences. 12(10), 1770-1778. https://doi.org/10.1016/j.solidstatesciences.2010.07.029