Crystallization behavior of evaporated Gd-Fe alloy films

Seong Rae Lee, A. E. Miller

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The composition dependence of the as-deposited structure, the in situ crystallization sequences, and thermal stability were investigated for evaporated Gd-Fe alloy films. The composition dependence of the structural variations in the as-deposited alloy films, the glass forming range, and the crystal size variation in the microcrystalline regions are consistent with the predictions of a model using hard spheres of two different sizes. The in situ crystallization reaction of Gd-Fe alloy films was characterized by the three reaction stages. (1) α-Fe and α-Gd were precipitated by the primary crystallization. The growth of primary crystals is characterized by a continuous process. (2) Some intermetallic compounds were formed by a polymorphous reaction. The growth of these phases is characterized by a discontinuous process. (3) The equilibrium phases are formed by decomposition reaction which was not detected in this study. The Gd atom array in the amorphous structure is concluded to be similar to the Fe atoms array of tetrahedra connected at corners. The thermal stability of the amorphous structure is the highest and growth rate of the primary crystals is the lowest at around 33 at. % Gd which is the composition of the close packed cubic Laves phase.

Original languageEnglish
Pages (from-to)3465-3470
Number of pages6
JournalJournal of Applied Physics
Volume55
Issue number10
DOIs
Publication statusPublished - 1984 Dec 1
Externally publishedYes

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crystallization
thermal stability
crystals
Laves phases
tetrahedrons
intermetallics
atoms
decomposition
glass
predictions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Crystallization behavior of evaporated Gd-Fe alloy films. / Lee, Seong Rae; Miller, A. E.

In: Journal of Applied Physics, Vol. 55, No. 10, 01.12.1984, p. 3465-3470.

Research output: Contribution to journalArticle

Lee, Seong Rae ; Miller, A. E. / Crystallization behavior of evaporated Gd-Fe alloy films. In: Journal of Applied Physics. 1984 ; Vol. 55, No. 10. pp. 3465-3470.
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