Abstract
Elastic neutron diffraction and Mössbauer spectroscopy have been used to study the structure, orientational-disordering (OD) transition, and melting of an Fe submonolayer adsorbed on Grafoil. The OD transition occurs between 150 and 167 K from a two-sublattice () structure to a nearly () phase in which the molecules are believed to rotate about the surface normal. Mössbauer spectra exhibit a more abrupt variation with temperature near melting at 170 K than through the OD transition.
- Received 7 February 1983
DOI:https://doi.org/10.1103/PhysRevB.27.5864
©1983 American Physical Society