01573nas a2200241 4500008004100000245009300041210006900134260002400203520077100227653001000998653003101008653001101039653001501050653002201065100002001087700002601107700002701133700002401160700002101184700002501205700002301230856007801253 2002 eng d00aStructural and Electronic Properties of Magnesium-3D Transition Metal Switchable Mirrors0 aStructural and Electronic Properties of Magnesium3D Transition M aGolden, COc12/20023 a
We have observed reversible mirror-to-transparent state switching in a variety of mixed metal thin films containing magnesium and first-row transition elements including Ni, Fe, Co, Mn, and Ti. The very large changes in both reflectance and transmittance on loading these films with hydrogen are accompanied by significant structural and electronic transformations. The valence states and coordination of metal atoms during hydrogen loading were followed using dynamic in situ transmissionmode X-ray absorption spectroscopy. Time-resolved Mg K-edge and Ni, Co, Mn, and Ti L-edge spectra reflect both reversible and irreversible changes in the metal environments. These spectra are compared to those of reference materials and to predictions from calculations.
10aEXAFS10aHydrogen storage materials10aNEXAFS10athin films10ax-ray diffraction1 aFarangis, Baker1 aNachimuthu, Ponnusamy1 aRichardson, Thomas, J.1 aSlack, Jonathan, L.1 aMeyer, Bruno, K.1 aPerera, Rupert, C.C.1 aRubin, Michael, D. uhttps://facades.lbl.gov/publications/structural-and-electronic-properties