A non-linear model of solid-state amorphization

Journal article

A non-linear model of solid-state amorphization (SSA) is proposed which takes into account the interaction of the structural elements of the amorphous phase via a stress field. For the experimental parameters which correspond to semiconductors undergoing SSA by high-pressure phase retention, we obtain the solution in the form of a self-sustaining wave with a constant velocity v. This solution exists in the region v < vc, where the critical velocity vc is controlled by the thermal and concentration diffusivities DT and DN . A simple scaling relation is proposed for vc: vc(DN, DT) ∼ DT/(DN)0.5. It is found that the characteristic correlation length of the amorphous phase formed by SSA strongly depends on the interplay between the parameters v, DN and DT.

Authors: Demishev, S; Ischenko, T; Blundell, S; Singleton, J

• Publication status: Published
• Journal: JOURNAL OF PHYSICS-CONDENSED MATTER
• Volume: 9
• Issue: 43
• Pages: 9199-9207
• Publication date: 1997-10-27
• DOI: 10.1088/0953-8984/9/43/006
• EISSN: 1361-648X
• ISSN: 0953-8984
• Language: English