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Solid (formula presented) and co in nanoporous glasses
Publikationstyp
Journal Article
Date Issued
1999-11-01
Sprache
English
Author(s)
Journal
Volume
60
Issue
18
Start Page
12666
End Page
12674
Citation
Physical Review B - Condensed Matter and Materials Physics 60 (18): 12666-12674 (1999)
Publisher DOI
Scopus ID
Publisher
American Physical Society
(Formula presented) and CO condensed into nanoporous glasses have been investigated by vapor pressure measurements and x-ray diffraction as a function of temperature and fractional filling. The pore material is stable with respect to bulk condensation for any fractional filling. The adsorbate on the pore walls has to be distinguished from the capillary condensate in the center of the pores. This distinction can be made not only in the liquid, but also in the solid state. The solid capillary condensate is quasi-hcp at higher temperatures. (Formula presented) remains in this state down to the lowest temperatures, even in pores as large as 130 Å diameter, whereas CO transforms into the orientationally ordered (Formula presented) phase. On heating an orientationally disordered intermediate phase with a fcc center-of-mass lattice is observed.
DDC Class
530: Physik