Publikation: “Conductive” yttria-stabilized zirconia as an epitaxial template for oxide heterostructures
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Journal of Applied Physics. American Institute of Physics (AIP). 2014, 115(17), 17C111. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4863803
Zusammenfassung
We report an in situ thermochemical treatment that significantly increases the macroscopic electrical conductivity of insulating yttria-stabilized zirconia (YSZ) (001) single-crystalline substrates. We demonstrate the high-quality surface crystalline structure of the resulting “conductive” cYSZ (001) by low- and high-energy electron diffraction. Soft- and hard X-ray photoemission spectroscopy measurements reveal a sizable reduction of Zr cations to a metallic state and their homogeneous distribution within the cYSZ. We discuss the correlation between the microscopic chemical processes leading to the increased macroscopic metallicity. Finally, the heteroepitaxial growth of a functional magnetic oxide model system, ultrathin EuO on cYSZ (001), was demonstrated. cYSZ (001) thereby enables both high quality oxide heteroepitaxy and the advanced sample characterization by high electron-fluence characterization techniques.
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CASPERS, Christian, Andrei GLOSKOVSKII, Wolfgang DRUBE, Claus M. SCHNEIDER, Martina MÜLLER, 2014. “Conductive” yttria-stabilized zirconia as an epitaxial template for oxide heterostructures. In: Journal of Applied Physics. American Institute of Physics (AIP). 2014, 115(17), 17C111. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4863803BibTex
@article{Caspers2014-05-07Condu-49740,
year={2014},
doi={10.1063/1.4863803},
title={“Conductive” yttria-stabilized zirconia as an epitaxial template for oxide heterostructures},
number={17},
volume={115},
issn={0021-8979},
journal={Journal of Applied Physics},
author={Caspers, Christian and Gloskovskii, Andrei and Drube, Wolfgang and Schneider, Claus M. and Müller, Martina},
note={Article Number: 17C111}
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<dcterms:abstract xml:lang="eng">We report an in situ thermochemical treatment that significantly increases the macroscopic electrical conductivity of insulating yttria-stabilized zirconia (YSZ) (001) single-crystalline substrates. We demonstrate the high-quality surface crystalline structure of the resulting “conductive” cYSZ (001) by low- and high-energy electron diffraction. Soft- and hard X-ray photoemission spectroscopy measurements reveal a sizable reduction of Zr cations to a metallic state and their homogeneous distribution within the cYSZ. We discuss the correlation between the microscopic chemical processes leading to the increased macroscopic metallicity. Finally, the heteroepitaxial growth of a functional magnetic oxide model system, ultrathin EuO on cYSZ (001), was demonstrated. cYSZ (001) thereby enables both high quality oxide heteroepitaxy and the advanced sample characterization by high electron-fluence characterization techniques.</dcterms:abstract>
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