High-temperature oxygen-assisted molecular beam epitaxy of BaWO <sub>4</sub> on W(110): growth mechanism and structural characterization
We have studied the growth of barium tungstate, BaWO4, by high-temperature oxygen-assisted molecular beam epitaxy on W(110). Barium tungstate grows in the form of isosceles triangular-shaped islands, tens of micrometers wide and tens of nanometers in height. The growth was monitored in real time by...
| Autores: | , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/131375 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/131375 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 548.5 Spectroscopy Photoluminescence Barium Transformation Catalysis Oxidation Crystals Bamoo4 Física de materiales 2211 Física del Estado Sólido 2211.03 Crecimiento de Cristales |
| Sumario: | We have studied the growth of barium tungstate, BaWO4, by high-temperature oxygen-assisted molecular beam epitaxy on W(110). Barium tungstate grows in the form of isosceles triangular-shaped islands, tens of micrometers wide and tens of nanometers in height. The growth was monitored in real time by low-energy electron microscopy and characterized in situ by low-energy electron diffraction, X-ray absorption and X-ray photoelectron spectroscopies. Further ex situ characterization was performed by optical and atomic force microscopies and Raman spectroscopy. Barium tungstate growth on W(110) was performed by dosing only barium in a molecular oxygen atmosphere due to incorporation of W atoms from the W(110) substrate. The islands correspond to the BaWO4 (011) crystallographic orientation and their sides are aligned along the [001] and [11̄1] directions of the BaWO4 crystal. |
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