Antonio, G. A.Kalia, R. K.Nakano, A.Vashishta, P.2014-05-202014-05-201992-04-01Physical Review B. College Pk: American Physical Soc, v. 45, n. 13, p. 7455-7458, 1992.0163-1829http://hdl.handle.net/11449/38109The 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.7455-7458engArtigo10.1103/PhysRevB.45.7455WOS:A1992HL99300061Acesso restritoWOSA1992HL99300061.pdf