TY - JOUR
T1 - Remarkable hydrogen storage, structural and optical properties in multi-layered Pd/Mg thin films
AU - Fujii, Hironobu
AU - Higuchi, Koichi
AU - Yamamoto, Kenichi
AU - Kajioka, Hideshi
AU - Orimo, Shinichi
AU - Toiyama, Kiyokazu
PY - 2002/11
Y1 - 2002/11
N2 - In this paper, we review our recent results on hydrogen storage, structural and optical properties in multi-layered Pd/Mg thin films. The thin films were prepared using a RF associated magnetron sputtering method, in which the structure in Mg layer was controlled into columnar-like textures with several tens nanometer in diameter by optimizing the sputtering conditions. The results obtained indicate that hydrogen of ∼5 mass% absorbs at 373 K in Mg under a hydrogen pressure of 0.1 MPa in multi-layered Pd/Mg films and the hydrogen desorbs at 360 K in vacuum. Such excellent hydrogen storage properties are explained by cooperative phenomena that hydrogen displays in nano-composite interface boundary regions between the Pd and Mg films. In addition, we experimentally confirmed at the first time that the rare earth and nickel free two-layered Pd/Mg film displayed optical transparency upon hydrogenation.
AB - In this paper, we review our recent results on hydrogen storage, structural and optical properties in multi-layered Pd/Mg thin films. The thin films were prepared using a RF associated magnetron sputtering method, in which the structure in Mg layer was controlled into columnar-like textures with several tens nanometer in diameter by optimizing the sputtering conditions. The results obtained indicate that hydrogen of ∼5 mass% absorbs at 373 K in Mg under a hydrogen pressure of 0.1 MPa in multi-layered Pd/Mg films and the hydrogen desorbs at 360 K in vacuum. Such excellent hydrogen storage properties are explained by cooperative phenomena that hydrogen displays in nano-composite interface boundary regions between the Pd and Mg films. In addition, we experimentally confirmed at the first time that the rare earth and nickel free two-layered Pd/Mg film displayed optical transparency upon hydrogenation.
KW - Cooperative phenomena
KW - Hydrogen storage
KW - Magnesium-palladium nano-composite
KW - Multi-layered thin film
KW - Optical transparency
KW - Thermal desorption spectroscopy
KW - Transmission electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=0036874266&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036874266&partnerID=8YFLogxK
U2 - 10.2320/matertrans.43.2721
DO - 10.2320/matertrans.43.2721
M3 - Review article
AN - SCOPUS:0036874266
SN - 1345-9678
VL - 43
SP - 2721
EP - 2727
JO - Materials Transactions
JF - Materials Transactions
IS - 11
ER -