Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials

The present report is an account of the generalization of the dynamic elasticity theory earlier proposed by Bucknum et al. and applied to the cubic diamond and tetragonal glitter lattices. It describes a theory of elasticity in which the elasticity moduli are based upon the microscopic constants of...

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Detalles Bibliográficos
Autores principales: Bucknum, Michael J., Castro, Eduardo Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Química
Chemical Bond
Elasticity Theory
Elasticity Modulo
Deformation Parameter
Superhard Material
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/142243
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-142243
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Chemical Bond
Elasticity Theory
Elasticity Modulo
Deformation Parameter
Superhard Material
spellingShingle Química
Chemical Bond
Elasticity Theory
Elasticity Modulo
Deformation Parameter
Superhard Material
Bucknum, Michael J.
Castro, Eduardo Alberto
Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
topic_facet Química
Chemical Bond
Elasticity Theory
Elasticity Modulo
Deformation Parameter
Superhard Material
description The present report is an account of the generalization of the dynamic elasticity theory earlier proposed by Bucknum et al. and applied to the cubic diamond and tetragonal glitter lattices. It describes a theory of elasticity in which the elasticity moduli are based upon the microscopic constants of the various structure-types. Such microscopic constants include the force constants of the chemical bonds in the unit of pattern of the material, its associated lattice parameters, and the elastic chemical bond deformation parameters of the material. In developing the outward features of the dynamic elasticity model, it is shown that an integral over the force density in the unit cell of a given material; where the force is modeled based upon the elastic deformation forces of the chemical bonds in the unit of pattern of the material, and the volume is written as a function of the deformations taking place inside the unit cell of the material; generates the terms for calculating its modulus of elasticity at pressure, in components, that are directed along the principal axes of the unit cell. Several potential solutions to the problem of superhardness are discussed and illustrated.
format Articulo
Articulo
author Bucknum, Michael J.
Castro, Eduardo Alberto
author_facet Bucknum, Michael J.
Castro, Eduardo Alberto
author_sort Bucknum, Michael J.
title Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
title_short Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
title_full Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
title_fullStr Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
title_full_unstemmed Towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
title_sort towards a microscopic theory of the modulus of elasticity in crystalline covalent materials and a survey of potential superhard materials
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/142243
work_keys_str_mv AT bucknummichaelj towardsamicroscopictheoryofthemodulusofelasticityincrystallinecovalentmaterialsandasurveyofpotentialsuperhardmaterials
AT castroeduardoalberto towardsamicroscopictheoryofthemodulusofelasticityincrystallinecovalentmaterialsandasurveyofpotentialsuperhardmaterials
bdutipo_str Repositorios
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