Epitaxial switchable yttrium-hydride mirrors

D. G. Nagengast*, J. W.J. Kerssemakers, A. T.M. Van Gogh, B. Dam, R. Griessen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

72 Citations (Scopus)

Abstract

By means of x-ray scattering and scanning probe microscopy it is shown that high-quality epitaxial Y films can be deposited on (111)-CaF2 substrates. The films can reversibly be switched from metallic YH2 to transparent insulating YH3 - δ. Although hydrogen absorption involves an expansion of the lattice and a symmetry change from hcp to fcc, the epitaxiality of the film remains intact during the switching process. The transparency and the insulating nature of the substrate opens unique possibilities to investigate electrically and optically these switchable mirror films in the single crystalline state.

Original languageEnglish
Pages (from-to)1724-1726
Number of pages3
JournalApplied Physics Letters
Volume75
Issue number12
DOIs
Publication statusPublished - 20 Sept 1999

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