Jump to main content
Jump to site search

Issue 4, 2013
Previous Article Next Article

The relevance of interfaces for oxide ion transport in yttria stabilized zirconia (YSZ) thin films

Author affiliations

Abstract

Thin YSZ films were prepared on magnesia, sapphire and strontium titanate (STO) single crystals using pulsed laser deposition and, for comparison, by a sol–gel method on STO. The bulk and interfacial mass and charge transport properties of these films were investigated by complementary impedance spectroscopy and tracer diffusion measurements. In this context, a novel two-step tracer diffusion experiment is introduced. For YSZ films on sapphire and magnesia, grain bulk conductivities similar to those of polycrystalline samples were measured in most cases. Strongly blocking grain boundaries could be identified by impedance measurements. The films on sapphire and magnesia also exhibited good agreement between effective transport properties of impedance and tracer measurements. YSZ layers on strontium titanate single crystals, on the other hand, showed a strongly increased effective conductivity in impedance studies. However, in tracer diffusion experiments this could be unambiguously attributed to conduction in the substrate while the diffusion coefficient of YSZ on STO was comparable to that of YSZ films on other substrates. Moreover, the tracer diffusion experiments did not indicate any significant increase of oxide ion mobility on a free YSZ surface compared to a Pt|YSZ interface.

Graphical abstract: The relevance of interfaces for oxide ion transport in yttria stabilized zirconia (YSZ) thin films

Back to tab navigation

Publication details

The article was received on 21 Dec 2011, accepted on 20 Nov 2012 and first published on 20 Nov 2012


Article type: Paper
DOI: 10.1039/C2CP42347B
Citation: Phys. Chem. Chem. Phys., 2013,15, 1097-1107

  •   Request permissions

    The relevance of interfaces for oxide ion transport in yttria stabilized zirconia (YSZ) thin films

    M. Gerstl, G. Friedbacher, F. Kubel, H. Hutter and J. Fleig, Phys. Chem. Chem. Phys., 2013, 15, 1097
    DOI: 10.1039/C2CP42347B

Search articles by author

Spotlight

Advertisements