ELASTIC-CONSTANTS AND PHONON-DISPERSION OF AMORPHOUS COPPER WITH EMBEDDED-ATOM FORCE

被引：2

作者：

XIE, Q ^{[1
]}

HUANG, MC ^{[1
]}

机构：

[1] XIAMEN UNIV, DEPT PHYS, XIAMEN 361005, PEOPLES R CHINA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 1994年 / 186卷 / 02期

关键词：

D O I：

10.1002/pssb.2221860206

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Elastic constants and phonon dispersion of amorphous copper are studied by assuming that the interatomic potential is transferable from the crystalline slate and can be represented by the analytical model of the embedded-atom method given by Johnson. To test its effectiveness, the force model is used to calculate the phonon eigenfrequencies in the copper crystal and the result is in perfect agreement with experimental values measured at 80 K. Based on the embedded-atom method and in connection with the radial distribution function, the formulae for calculating the elastic constants of the amorphous phase and the modified Takeno-Goda formula for studying phonon dispersion in amorphous materials are presented. For an easy implementation, the formulae are simplified by using the Bhatia-Singh approximation, in which only the nearest-neighbour contribution is considered.

引用

页码：383 / 391

页数：9

共 27 条

[1] PHONON FREQUENCIES IN METALLIC GLASSES [J].

AGARWAL, PC ;

KACHHAVA, CM .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1993, 179 (02) :365-371

[2] PHONON-DISPERSION IN METALLIC GLASSES - A SIMPLE-MODEL [J].

BHATIA, AB ;

SINGH, RN .

PHYSICAL REVIEW B, 1985, 31 (08) :4751-4758

[3] VARIATIONAL THERMODYNAMIC CALCULATIONS FOR LIQUID TRANSITION-METALS [J].

BRETONNET, JL ;

DEROUICHE, A .

PHYSICAL REVIEW B, 1991, 43 (11) :8924-8929

[4] TIGHT-BINDING POTENTIALS FOR TRANSITION-METALS AND ALLOYS [J].

CLERI, F ;

ROSATO, V .

PHYSICAL REVIEW B, 1993, 48 (01) :22-33

[5] ELASTIC PROPERTIES OF A METALLIC-GLASS RELATIVE TO THE CRYSTAL [J].

CYROTLACKMANN, F .

PHYSICAL REVIEW B, 1980, 22 (06) :2744-2748

[6] APPLICATION OF THE EMBEDDED ATOM METHOD TO PHONONS IN TRANSITION-METALS [J].

DAW, MS ;

HATCHER, RD .

SOLID STATE COMMUNICATIONS, 1985, 56 (08) :697-699

[7] EMBEDDED-ATOM METHOD - DERIVATION AND APPLICATION TO IMPURITIES, SURFACES, AND OTHER DEFECTS IN METALS [J].

DAW, MS ;

BASKES, MI .

PHYSICAL REVIEW B, 1984, 29 (12) :6443-6453

[8] A SIMPLE EMPIRICAL N-BODY POTENTIAL FOR TRANSITION-METALS [J].

FINNIS, MW ;

SINCLAIR, JE .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1984, 50 (01) :45-55

[9] LONGITUDINAL AND TRANSVERSE EXCITATIONS IN A GLASS [J].

GREST, GS ;

NAGEL, SR ;

RAHMAN, A .

PHYSICAL REVIEW LETTERS, 1982, 49 (17) :1271-1274

[10] STUDY OF PHONON EIGENFREQUENCIES IN METALLIC GLASSES [J].

GUPTA, N ;

JAIN, KC ;

SAXENA, NS .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 1993, 176 (01) :81-90

← 1 2 3 →