| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Oshima, T.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2016Fabrication and Characterization of Semiconductor Photoelectrodes with Orientation-Controlled α-Fe<sub>2</sub>O<sub>3</sub> Thin Filmscitations
- 2016Strain-induced metal-insulator transition in <i>t</i><sub>2g</sub> electron system of perovskite titanate Sm<sub>0.5</sub>Ca<sub>0.5</sub>TiO<sub>3</sub> filmsscitations
- 2015Pulsed-laser deposition of superconducting LiTi<sub>2</sub>O<sub>4</sub> ultrathin films
- 2014Graphoepitaxy of ZnO: novel selection rule of domain formation on nanopatterned glass surface
- 2013Spontaneous atomic ordering and magnetism in epitaxially stabilized double perovskitescitations
- 2012Epitaxial structures of band-gap-engineered α-(Cr<sub>x</sub>Fe<sub>1-x</sub>)<sub>2</sub>O<sub>3</sub> (0 ≤x≤1) films grown on C-plane sapphirecitations
- 2012Spontaneous atomic ordering and magnetism in epitaxially stabilized double-perovskites
Places of action
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article
Epitaxial structures of band-gap-engineered α-(Cr<sub>x</sub>Fe<sub>1-x</sub>)<sub>2</sub>O<sub>3</sub> (0 ≤x≤1) films grown on C-plane sapphire
Abstract
Solid solutions of α-Cr<sub>2</sub>O<sub>3</sub> and α-Fe<sub>2</sub>O<sub>3</sub> are novel oxide semiconductors exhibiting narrower band gaps than those of the end members. We have investigated the heteroepitaxial growth and crystalline structure of pulsed-laser deposited α-(Cr<sub>x</sub>Fe<sub>1-x</sub>)<sub>2</sub>O<sub>3</sub> films on c-plane sapphire substrates. Under the growth condition optimized for α-Fe2O3, reflection high-energy electron diffraction intensity oscillations were observable for both α-Fe<sub>2</sub>O<sub>3</sub> and α-Cr<sub>2</sub>O<sub>3</sub>, enabling us to control film thickness in a layer-by-layer fashion. The composition dependence of the epitaxial structures, including phase purity, orientation, strain, and in-plane rotation domain, was characterized by X-ray diffraction to reveal a defect-free composition range (0 ≤x ≤0.50). The films with 0.60 ≤x ≤1 were found to have 180°-rotation domains. The absorption spectra of α-(Cr0.50Fe0.50)2O3 solid solution (corundum) and superlattice (nominally composed ilmenite) films are compared with those of end members and an α-Fe<sub>2</sub>O<sub>3</sub>/α-Cr<sub>2</sub>O<sub>3</sub> bilayer film to elucidate the origin of the band-gap narrowing.