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On the statistical models of crystal morphology

Technical Report:

Abstract

Analytical approaches are developed to describe the thermal disordering of surfaces in noble-gas crystals, based on the Lennard-Jones interaction potential. The roughness of faces with different orientations is described by means of a quasi-lattice model, where the repulsive forces and the contributions of vibrational degrees of freedom are taken into account in the free surface energy. It is shown, that the free surface energy becomes isotropic near the melting temperature. The surface melting is described by the weighted-density functional method. The face-orientation dependences of surface melting and the melt structurization near crystal surface are studied. The effect of long-range Coulomb forces on the atomic structure of the crystal-melt interface is considered. (author). 15 refs, 5 figs.
Authors:
Cherepanova, T A; [1]  Stekolnikov, A V; [2]  Bennema, P [3] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Latvian Academy of Sciences, Riga (USSR). Centre of Microelectronics
  3. Catholic Univ. of Nijmegen, Lab of Solid State Chemistry, Nijmegen (Netherlands). Research Inst. of Materials
Publication Date:
Sep 01, 1991
Product Type:
Technical Report
Report Number:
IC-91/307
Reference Number:
SCA: 665000; PA: AIX-23:018330; SN: 92000661943
Resource Relation:
Other Information: PBD: Sep 1991
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; FCC LATTICES; ORDER-DISORDER TRANSFORMATIONS; FREE ENERGY; INTERFACES; IONIC CRYSTALS; ISING MODEL; LENNARD-JONES POTENTIAL; MELTING; 665000; PHYSICS OF CONDENSED MATTER
OSTI ID:
10118554
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE92617434; TRN: XA9230494018330
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
11 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Cherepanova, T A, Stekolnikov, A V, and Bennema, P. On the statistical models of crystal morphology. IAEA: N. p., 1991. Web.
Cherepanova, T A, Stekolnikov, A V, & Bennema, P. On the statistical models of crystal morphology. IAEA.
Cherepanova, T A, Stekolnikov, A V, and Bennema, P. 1991. "On the statistical models of crystal morphology." IAEA.
@misc{etde_10118554,
title = {On the statistical models of crystal morphology}
author = {Cherepanova, T A, Stekolnikov, A V, and Bennema, P}
abstractNote = {Analytical approaches are developed to describe the thermal disordering of surfaces in noble-gas crystals, based on the Lennard-Jones interaction potential. The roughness of faces with different orientations is described by means of a quasi-lattice model, where the repulsive forces and the contributions of vibrational degrees of freedom are taken into account in the free surface energy. It is shown, that the free surface energy becomes isotropic near the melting temperature. The surface melting is described by the weighted-density functional method. The face-orientation dependences of surface melting and the melt structurization near crystal surface are studied. The effect of long-range Coulomb forces on the atomic structure of the crystal-melt interface is considered. (author). 15 refs, 5 figs.}
place = {IAEA}
year = {1991}
month = {Sep}
}