Messung der Fehlordnungsenergie an abschreckend kondensierten Metallschichten bei tiefer Temperatur

Abstract

Metal films are produced with a high degree of disorder by quenching condensation. The stored energy release and the resistivity decrease are measured during annealing of Au-, Pb-, and Sn-films from 20 to 60° K and during crystallization of amorphous Sn-films with a 10 atomic-% Cu-content. The results are compared with earlier measurements on Bi-, Ga-, and Cu-films produced by quenching condensation. The energy released during the crystallization of the amorphous films (Bi, Ga, Sn+10 at.-% Cu) amounts to half of the heat of melting. This is in good agreement with calculations ofOriani andLumsden for the disorder part of the entropy of melting. The recovery of the crystalline Cu-, Au-, Pb-, and Sn-films is described by a crystallization of highly disordered atoms to crystallites formed during condensation. About 30% of all atoms of these films are in this highly disordered state.