TY - JOUR
T1 - Optical transmission of magnesium hydride thin film with characteristic nanostructure
AU - Yamamoto, K.
AU - Higuchi, K.
AU - Kajioka, H.
AU - Sumida, H.
AU - Orimo, S.
AU - Fujii, H.
N1 - Funding Information:
We would like to thank K. Toiyama (Western Hiroshima Prefecture Industrial Research Institute, Kure, Japan) for useful discussions on the structural properties, and E. Tanabe (Hiroshima Prefectural Institute of Science and Technology, Higashi–Hiroshima, Japan) for his help with the transmission electron microscope observations. This work was financially supported by a Proposal-Based New Industry Creative Type Technology R&D Promotion Program from the New Energy and Industrial Technology Development Organization (NEDO) in Japan.
PY - 2002/1/17
Y1 - 2002/1/17
N2 - Optical and structural properties of rare-earth free and pure Mg thin film coated with Pd have been investigated. Optical examination indicates that the fully hydrogenated films are in a color-neutral transparent state. With increasing temperature up to 453 K in air, nontransparent scratch-like parts that correspond to dehydrogenated Mg precipitate in macroscopic scale, and their number gradually increases and grows sharply along specific orientations. The structural characterization indicates that the Mg layer is composed of epitaxial columnar grains whose widths are less than 100 nm with a c-axis preferred orientation for the Mg layer. The columnar grains are restructured to grains with 50-100 nm diameter during hydrogenation-dehydrogenation (optical switching) cycles.
AB - Optical and structural properties of rare-earth free and pure Mg thin film coated with Pd have been investigated. Optical examination indicates that the fully hydrogenated films are in a color-neutral transparent state. With increasing temperature up to 453 K in air, nontransparent scratch-like parts that correspond to dehydrogenated Mg precipitate in macroscopic scale, and their number gradually increases and grows sharply along specific orientations. The structural characterization indicates that the Mg layer is composed of epitaxial columnar grains whose widths are less than 100 nm with a c-axis preferred orientation for the Mg layer. The columnar grains are restructured to grains with 50-100 nm diameter during hydrogenation-dehydrogenation (optical switching) cycles.
KW - Hydrogen storage
KW - Magnesium hydride
KW - Nanostructure
KW - Optical transmission
KW - Transmission electron microscopy
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U2 - 10.1016/S0925-8388(01)01628-0
DO - 10.1016/S0925-8388(01)01628-0
M3 - Conference article
AN - SCOPUS:0037122536
SN - 0925-8388
VL - 330-332
SP - 352
EP - 356
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
T2 - Proceedings of the International Symposium on Metal-Hydrogen (MH 2000)
Y2 - 1 October 2000 through 6 October 2000
ER -