CRYSTALLINE FRAGMENTS IN GLASSES

被引：12

作者：

ANTONIO, GA

KALIA, RK

NAKANO, A

VASHISHTA, P

机构：

[1] LOUISIANA STATE UNIV,CONCURRENT COMP LAB MAT SIMULAT,BATON ROUGE,LA 70803

[2] LOUISIANA STATE UNIV,DEPT PHYS & ASTRON,BATON ROUGE,LA 70803

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.45.7455

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nature of tetrahedral molecular fragments is investigated in SiSe2 glasses using the molecular-dynamics method. The glass consists of both edge-sharing (ES) and corner-sharing tetrahedra. The ES tetrahedra are the building blocks of chain-like-molecular fragments. The two-edge-sharing tetrahedra are the nucleus, and corner-sharing configurations provide connecting hinges between fragments. Statistics of rings and fragments reveals that threefold and eightfold rings are most abundant, chainlike fragments that are typically 10-15 angstrom long occur mostly in eightfold rings, and the longest fragments occur in elevenfold rings.

引用

页码：7455 / 7458

页数：4

共 17 条

[1]

DESA JAE, 1982, J NON-CRYST SOLIDS, V51, P57, DOI 10.1016/0022-3093(82)90189-2

[2] CRYSTAL-STRUCTURE OF GERMANIUM DISELENIDE [J].