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Optical properties of MgH2 measured in situ by ellipsometry and spectrophotometry
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Optics .ORCID iD: 0000-0001-9229-2028
2003 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 68, no 11Article in journal (Refereed) Published
Abstract [en]

The dielectric properties of alpha-MgH2 are investigated in the photon energy range between 1 and 6.5 eV. For this purpose, a sample configuration and experimental setup are developed that allow both optical transmission and ellipsometric measurements of a transparent thin film in equilibrium with hydrogen. We show that alpha-MgH2 is a transparent, color neutral insulator with a band gap of 5.6+/-0.1 eV. It has an intrinsic transparency of about 80% over the whole visible spectrum. The dielectric function found in this work confirms very recent band-structure calculations using the GW approximation by Alford and Chou (unpublished). As Pd is used as a cap layer we report also the optical properties of PdHx thin films.

Place, publisher, year, edition, pages
2003. Vol. 68, no 11
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Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47754DOI: 10.1103/PhysRevB.68.115112OAI: oai:DiVA.org:liu-47754DiVA: diva2:268650
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Arwin, Hans

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