Switchable mirrors for visualization and control of hydrogen diffusion in transition metals | Zendy

Arndt Remhof | Zendy; Sense Jan van der Molen | Zendy; Agnieszka Antosik | Zendy; Agnieszka Dobrowolska | Zendy; N. J. Koeman | Zendy; R. Griessen | Zendy

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Switchable mirrors for visualization and control of hydrogen diffusion in transition metals

Author(s) -

Arndt Remhof,

Sense Jan van der Molen,

Agnieszka Antosik,

Agnieszka Dobrowolska,

N. J. Koeman,

R. Griessen

Publication year - 2002

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.66.020101

Subject(s) - diffusion , hydrogen , materials science , thin film , transition metal , analytical chemistry (journal) , optics , condensed matter physics , atomic physics , crystallography , physics , nanotechnology , thermodynamics , chemistry , quantum mechanics , chromatography , catalysis , biochemistry

We show that the switchable mirror material YH x can be used both as an indicator to monitor and as an agent to control hydrogen diffusion in thin films. The applicability of the optical-indicator technique is demonstrated for VH x thin films. The diffusion coefficient is typically 10 - 5 cm 2 /s at concentrations around 0.7 H/V at temperatures between 373 and 473 K. Deposition of a layer of Y on V makes it also possible to tune the effective hydrogen mobility via the V/Y thickness ratio. This can be used for investigation of hydrogen diffusion waves in laterally structured objects.

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