ACTA

Influence of Valence Band Modifications on Hydrogen Absorption in Zr-Pd Alloy Thin Films

B. Jabłoński^a,b, S. Pacanowski^a, M. Werwiński^a, A. Marczyńska^a, H. Dawczak-Dębicki^a,c, A. Szajek^a, and L. Smardz^a
^aInstitute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
^bFaculty of Technical Physics, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland
^cFaculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

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We study the valence band modifications of in-situ prepared nano- and polycrystalline Pd-Zr alloy thin films using X-ray photoelectron spectroscopy. Results were compared with valence bands calculated by ab initio methods. Furthermore, hydrogen absorption and desorption kinetics under pressure of about 570 mbar were studied in Pd covered nanocrystalline ZrPd₂ alloy thin film. Results showed that modifications of the valence band of the nanocrystalline alloy thin film could significantly influence on hydrogen absorption and desorption process.

DOI: 10.12693/APhysPolA.133.620
PACS numbers: 73.22.-f, 82.80.Pv