C24Cs samples containing oriented N2 molecules

Y. Finkelstein, R. Moreh, D. Nemirovsky, O. Shahal, F. Beguin, L. Duclaux

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3 Scopus citations

Abstract

The adsorption of N2 molecules inside C24Cs has been studied in detail as a function of temperature and pressure using n-diffraction and nuclear resonance photon scattering (NRPS). Large differences were observed between samples derived from highly oriented pyrolytic graphite and those prepared from graphite powder. The tilt angle of the N2 molecular axis was determined by using NRPS and found to lay nearly parallel to the graphite planes. The amount of adsorbed N2 increased with decreasing temperatures, reaching saturation composition C24Cs(N2)1.5 at approximately 100 K with an initial N2 pressure of 2 bar. At higher pressure, 9 bar, two new phases were formed: a second stage C32Cs(N2)2.1 and a first stage C16Cs(N2)1.8 at T<170 K and are discussed in detail.

Original languageEnglish
Pages (from-to)3130-3137
Number of pages8
JournalJournal of Materials Research
Volume14
Issue number7
DOIs
StatePublished - 1 Jan 1999

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