## Abstract

Elastic neutron diffraction and Mössbauer spectroscopy have been used to study the structure, orientational-disordering (OD) transition, and melting of an Fe(CO)5 submonolayer adsorbed on Grafoil. The OD transition occurs between 150 and 167 K from a two-sublattice (sqrt[7]×sqrt[21]) structure to a nearly (sqrt[7]×sqrt[7]) 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.

Original language | English |
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Journal | Physical Review B |

Volume | 27 |

Issue number | 9 |

Pages (from-to) | 5864-5867 |

ISSN | 2469-9950 |

DOIs | |

Publication status | Published - 1983 |