Microstructure of MmM5/Mg multi-layer hydrogen storage films prepared by magnetron sputtering
Article
Article Title | Microstructure of MmM5/Mg multi-layer hydrogen storage films prepared by magnetron sputtering |
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ERA Journal ID | 35058 |
Article Category | Article |
Authors | Ouyang, L. Z. (Author), Wang, Hao (Author), Zhu, M. (Author), Zou, Jin (Author) and Chung, C. Y. (Author) |
Journal Title | Microscopy Research and Technique |
Journal Citation | 64 (4), pp. 323-329 |
Number of Pages | 7 |
Year | 2004 |
Place of Publication | Hoboken, NJ, United States |
ISSN | 1059-910X |
1097-0029 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/jemt.20089 |
Abstract | Multi-layer hydrogen storage thin films with Mg and MmNi3.5(CoAlMn)1.5 (here Mm denotes La-rich mischmetal) as alternative layers were prepared by direct current magnetron sputtering. Transmission electron microscopy investigation shows that the microstructure of the MmNi3.5(CoAlMn)1.5 and Mg layers are significantly different although their deposition conditions are the same. The MmNi3.5(CoAlMn)1.5 layer is composed of two regions: one is an amorphous region approximately 4 nm thick at the bottom of the layer and the other is a nanocrystalline region on top of the amorphous region. The Mg layer is also composed of two regions: one is a randomly orientated nanocrystalline region 50 nm thick at the bottom of the layer and the other is a columnar crystallite region on top of the nanocrystalline region. These Mg columnar crystallites have their [001] directions parallel to the growth direction and the average lateral size of these columnar crystallites is about 100 nm. A growth mechanism of the multi-layer thin films is discussed based on the experiment results |
Keywords | transmission electron microscopy; hydrogen storage alloys; thin films; magnetron sputtering |
ANZSRC Field of Research 2020 | 310199. Biochemistry and cell biology not elsewhere classified |
401408. Manufacturing processes and technologies (excl. textiles) | |
401607. Metals and alloy materials | |
401807. Nanomaterials | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | South China University of Technology, China |
University of Queensland | |
City University of Hong Kong, China |
https://research.usq.edu.au/item/9zxv2/microstructure-of-mmm5-mg-multi-layer-hydrogen-storage-films-prepared-by-magnetron-sputtering
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