Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/6933
Title: | Room-temperature hydrogen-induced resistivity response of Pd/Mg–Ni films | Authors: | Tang, YM Ong, CW |
Issue Date: | Jun-2009 | Source: | Journal of materials research, June 2009, v. 24, no. 6, p. 1928-1935 | Abstract: | The structure and the response of the effective electrical resistivity 〈ρ〉 in hydrogenation–dehydrogenation processes of palladium-coated/magnesium-nickel (Pd/Mg–Ni) films were investigated as functions of Mg-to-Ni ratio, substrate temperature, and thickness of Pd overcoat. Films of noncrystalline structures with various Mg-to-Ni ratios showed prominent hydrogen-(H-)induced switching effect of 〈ρ〉. A film is supposed to contain segregated noncrystalline regions of different Mg-to-Ni ratios. The regions of an Mg-to-Ni ratio close to 2 are responsible for the switching processes. At room temperature, a dehydrogenation process is much slower than a hydrogenation process. Crystallization hindered the H-induced switching effect of 〈ρ〉. The use of a thicker Pd overcoat accelerated the change of 〈ρ〉 in the initial hydrogenating process but diminished the contrast. Results led to some discussions on the mechanisms governing the switching effects. | Keywords: | Hydrogenation X-ray diffraction (XRD) X-ray photoelectron spectroscopy (XPS) |
Publisher: | Cambridge University Press | Journal: | Journal of materials research | ISSN: | 0884-2914 | EISSN: | 2044-5326 | DOI: | 10.1557/jmr.2009.0226 | Rights: | © 2009 Materials Research Society The following article "Yu Ming Tang and Chung Wo Ong (2009). Room-temperature hydrogen-induced resistivity response of Pd/Mg–Ni films. Journal of Materials Research, 24(6), pp 1928-1935. doi:10.1557/jmr.2009.0226." is available at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7949508 |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Tang_Room-temperature_Pd_Mg-Ni.pdf | 871.58 kB | Adobe PDF | View/Open |
Page views
127
Last Week
1
1
Last month
Citations as of Apr 21, 2024
Downloads
179
Citations as of Apr 21, 2024
SCOPUSTM
Citations
7
Last Week
0
0
Last month
0
0
Citations as of Apr 26, 2024
WEB OF SCIENCETM
Citations
7
Last Week
0
0
Last month
0
0
Citations as of Apr 25, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.