Structure and Ordering Process in Epitaxial Ultra-Thin Films of Metallic Alloys: In-Situ Temperature X-ray Diffraction of AuNi Layers

  1. Prof. Dr. M. Rühle4 and
  2. Prof. Dr. H. Gleiter5
  1. Isabelle Schuster1,
  2. Alain Marty1,
  3. Bruno Gilles2 and
  4. Gregory Abadias3

Published Online: 23 DEC 2005

DOI: 10.1002/352760622X.ch1

Interface Controlled Materials, Volume 9

Interface Controlled Materials, Volume 9

How to Cite

Schuster, I., Marty, A., Gilles, B. and Abadias, G. (2000) Structure and Ordering Process in Epitaxial Ultra-Thin Films of Metallic Alloys: In-Situ Temperature X-ray Diffraction of AuNi Layers, in Interface Controlled Materials, Volume 9 (eds M. Rühle and H. Gleiter), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/352760622X.ch1

Editor Information

  1. 4

    Max-Planck-Institut für Metallforschung, Seestraße 92, 70174 Stuttgart, Germany

  2. 5

    Forschungszentrum Karlsruhe, Postfach 3640, 76021 Karlsruhe, Germany

Author Information

  1. 1

    CEA/Grenoble, France

  2. 2

    CNRS, France

  3. 3

    Université de Poitiers, France

Publication History

  1. Published Online: 23 DEC 2005
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301911

Online ISBN: 9783527606221

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Keywords:

  • interface controlled materials;
  • metallic alloys;
  • epitaxial ultra-thin films;
  • structure;
  • ordering process;
  • diffraction of AuNi layers

Summary

We have shown that AuNi layers evolved towards a modulated structure along the <001> direction, consisting in one Ni-rich plane and (n–1) Au-rich planes. This ordered phase is stable in a narrow temperature range and the period n is slightly dependant on the xNi composition. XRD diagrams simulation, structure calculation and TEM observations carried out with xNi = 0.4 allow us to propose that the ordering process begins on very small domains of various ordered structure and that the domains with the most stable structure then grow up to the others cost. Our model for the stable phase is not the most perfect one but a partially ordered structure with a relaxation in the Au-planes/Ni-plane distance of about 5 %.