Impact of microwave post-deposition annealing on the crystallization of amorphous hydrogenated perovskites. The case of the three-dimensional tungsten and of the two-dimensional molybdenum oxide films
| Autor: | Antonios M. Douvas, Giorgos Papadimitropoulos, S. Kennou, I. Karystinos, Ioannis Kostis, Anastasia Soultati, Dimitris Davazoglou, Maria Vasilopoulou, George Skoulatakis |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Hydrogen Annealing (metallurgy) chemistry.chemical_element 02 engineering and technology Tungsten 010402 general chemistry 01 natural sciences Oxygen law.invention law Materials Chemistry Crystallization Chemical composition Metallurgy Metals and Alloys Surfaces and Interfaces 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Chemical engineering chemistry Molybdenum 0210 nano-technology |
| Zdroj: | Thin Solid Films. 615:329-337 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2016.07.046 |
| Popis: | Hydrogenated sub-stoichiometric oxides exhibiting perovskite structure such as those of tungsten and of molybdenum (H:MOx, where M = W or Mo and x H bonds present in them only, without heating the rest of the lattice and the substrate. It was shown that, contrary to thermal heating, MW annealing did not affect significantly the oxygen and hydrogen contents in samples, but it caused an atomic re-arrangement; more significant for H:MoOx than for H:WOx films, attributed to the layered, two-dimensional structure of the former contrary to the three-dimensional one of the latter. It was concluded that MW annealing at appropriately chosen frequencies may potentially be used to improve atomic ordering in other materials without causing alterations of their chemical composition and avoiding the heating of the substrate. |
| Databáze: | OpenAIRE |
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