International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Most Trusted Research Journal Since Year 2012

ISSN: 2319-7064



Research Paper | Physics Science | Tunisia | Volume 9 Issue 1, January 2020

Structural Study of Acetylene Thin Films Absorbed on Exfoliated Graphite (0001)

M. Trabelsi, F. Khemiri, S. Missaoui, H. Ettayeb, J. P. Coulomb, Y. Larher

The structures of deuterated acetylene [C2D2] thin films adsorbed on the (0001) surfaces of exfoliated graphite have been investigated by elastic neutron diffusion. The aim of this study was to assess the structures of the condensed phases. Neutron diffraction spectra have been recorded at temperature ranging from 10K to 141K and for coverages corresponding to the monolayer completion 0.7 layer 1.23 layers. Two bidimensional solid phases S1 and S2 have been identified. Their structures present commensurability with the (0001) graphite surface. At an intermediate coverage ( = 1.0 layer) there is coexistence of the two solid phases. The evolution of the recorded spectra with the temperature suggests the fusion of the S1 solid to occur at Tm (S1) = 135 1K. The fusion of S2 solid happened at higher temperature: Tm (S2) > Tm (S1).

Keywords: neutron diffraction, physisorbed phases, commensurate phases

Edition: Volume 9 Issue 1, January 2020

Pages: 1320 - 1327


How to Cite this Article?

M. Trabelsi, F. Khemiri, S. Missaoui, H. Ettayeb, J. P. Coulomb, Y. Larher, "Structural Study of Acetylene Thin Films Absorbed on Exfoliated Graphite (0001)", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20204177, Volume 9 Issue 1, January 2020, 1320 - 1327

28 PDF Views | 34 PDF Downloads

Download Article PDF

Top