H
Hans-Gerd Boyen
Researcher at University of Hasselt
Publications - 153
Citations - 9849
Hans-Gerd Boyen is an academic researcher from University of Hasselt. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Thin film. The author has an hindex of 39, co-authored 149 publications receiving 8512 citations. Previous affiliations of Hans-Gerd Boyen include University of Ulm & University of Duisburg-Essen.
Papers
More filters
Journal ArticleDOI
Electron spectroscopy on boron nitride thin films: Comparison of near-surface to bulk electronic properties
TL;DR: In this article, the surface electronic structure of ex situ prepared boron-nitride films is analyzed and compared to experimental and theoretical bulk-electronic properties taken from the literature.
Journal ArticleDOI
Electronic and Magnetic Properties of Ligand-Free FePt Nanoparticles†
Hans-Gerd Boyen,Kai Fauth,Kai Fauth,B. Stahl,Paul J. Ziemann,G. Kästle,F. Weigl,Florian Banhart,Florian Banhart,Markus Hessler,Markus Hessler,Gisela Schütz,N. S. Gajbhiye,Jens Ellrich,Horst Hahn,Michael Büttner,M. G. Garnier,Peter Oelhafen +17 more
TL;DR: In this article, the electronic structure and magnetic properties of the face-centered-cubic FePt particles are presented, and applications in high-density magnetic data recording are foreseen.
Journal ArticleDOI
Lowering of the L10 ordering temperature of FePt nanoparticles by He+ ion irradiation
TL;DR: In this paper, the phase transition of magnetic particles towards the chemically ordered L10 phase is tracked for 350kV He+ ion irradiated samples and compared to a nonirradiated reference.
Journal ArticleDOI
Chemically induced metal-to-insulator transition in Au55 clusters: effect of stabilizing ligands on the electronic properties of nanoparticles.
TL;DR: In this paper, photoelectron spectroscopy was used to analyze the behavior of ligated Au clusters and showed that exposure to x-rays during the measurements partially decomposes the shell by removal of the chlorine atoms, resulting in a metallic behavior.
Chemically Induced Metal-to-Insulator Transition in Au55 Clusters
TL;DR: The cluster compound Au55(PPh3)12Cl6 has been reanalyzed by photoelectron spectroscopy giving direct evidence for a nonmetallic behavior of the individual Au clusters as long as their ligand shell remains intact as demonstrated by a steplike intensity at the Fermi energy.