Crystal-face dependence of surface melting

Ion-shadowing and -blocking experiments on a cylindrical single crystal of Pb reveal a strongly orientation-dependent disordering (melting) of the surface with increasing temperature. The thickness of the disordered surface layer is found to diverge logarithmically as the bulk melting point is appro...

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Veröffentlicht in:	Physical review letters 1987-12, Vol.59 (23), p.2678-2681
Hauptverfasser:	PLUIS, B, DENIER VAN DER GON, A. W, FRENKEN, J. W. M, VAN DER VEEN, J. F
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Equations of state, phase equilibria, and phase transitions Exact sciences and technology Materials science Metals, semimetals and alloys Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Specific materials Specific phase transitions
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Beschreibung
Zusammenfassung:	Ion-shadowing and -blocking experiments on a cylindrical single crystal of Pb reveal a strongly orientation-dependent disordering (melting) of the surface with increasing temperature. The thickness of the disordered surface layer is found to diverge logarithmically as the bulk melting point is approached. The process of disordering is shown to be driven by an orientation-dependent difference in free energy between the surface in its ordered and liquid states. 19 ref.--AA
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.59.2678