We’re proud to highlight an exciting achievement by our valued partner, Spanish National Research Council (CSIC), in the framework of the BEETHOVEN project.
Their recent research paper, “Growth of MnWO4 nanowires on W(110) by high-temperature oxygen-assisted molecular beam epitaxy“, has been successfully published in the Journal of Materials Chemistry C.
Authored by Kalina Fornal, Clara Gutierrez-Cuesta, Adolfo del Campo, Anna Mandziak, Pawel Nita, Jose´ Emilio Prieto, Jose´ F. Marco and Juan de la Figuera, the paper can be accessed via the following DOI: https://doi.org/10.1039/D5TC02639C.
Below, you will find the abstract of the publication.
Abstract:
We describe the growth of synthetic hübnerite (MnWO4) by high-temperature oxygen-assisted molecular beam epitaxy on W(110). The hübnerite nanowires have widths of hundreds of nanometers, heights of tens of nanometers and lengths in the range of millimeters. The growth was followed in real time by low-energy electron microscopy (LEEM). The nanowires were characterized in situ by low-energy electron microscopy, X-ray absorption and X-ray photoelectron spectroscopy in photoemission microscopy, as well as ex situ by atomic force microscopy, optical microscopy and Raman spectroscopy. Hübnerite can be grown on W(110) by dosing only manganese in a molecular oxygen environment, likely due to the formation of highly mobile WOx species with diffusion lengths of the order of hundreds of micrometers. These species can react with the deposited Mn and be efficiently incorporated into the wolframite structure of hübnerite. The strongly anisotropic growth observed may stem from the inherent anisotropy of the wolframite lattice. We propose that this method may be applicable to the growth of other tungstates as well.