When is thermodynamics relevant to ion-induced atomic rearrangements in metals?

W. L. Johnson, Y. T. Cheng, M. Van Rossum, M. A. Nicolet

Research output: Contribution to journalArticlepeer-review

402 Scopus citations


The problem of ion-induced mixing of metal bilayers is examined in the limit of heavy metals (Z ≳ 20) and heavy energetic ions (E ≳ 100 keV) and in the absence of delayed effects such as radiation enhanced thermal diffusion. Thermochemical effects are shown to play an important role in biasing the random walk process of mixing. A universal mixing equation is derived which predicts the evolution of the concentration profile as a function of ion dose. Finally, a model is presented which allows one to predict what metallurgical phases are formed during the mixing process. Criteria for amorphous phase formation are particularly emphasized.

Original languageEnglish
Pages (from-to)657-665
Number of pages9
JournalNuclear Inst. and Methods in Physics Research, B
Issue numberPART 2
StatePublished - Mar 1985

Bibliographical note

Funding Information:
The authorsw outd like to thank the Departmento f Energy for partial support under Proj. Agree. No. DE-AT03-81ER10870 under Contract No. DE-AMOf 76FGO767a nd the Office of Naval Researchf or partial support under Contract No. NGOO14-84-K-0275O. ne of the authors (M.V.R.) also acknowledgest he IBM Corporation for support.

Copyright 2015 Elsevier B.V., All rights reserved.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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