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Title: Ion-beam-induced magnetic and structural phase transformation of Ni-stabilized face-centered-cubic Fe films on Cu(100)

Metastable face-centered cubic (fcc) Fe/Cu(100) thin films are good candidates for ion-beam magnetic patterning due to their magnetic transformation upon ion-beam irradiation. However, pure fcc Fe films undergo spontaneous transformation when their thickness exceeds 10 ML. This limit can be extended to approximately 22 ML by deposition of Fe at increased CO background pressures. We show that much thicker films can be grown by alloying with Ni for stabilizing the fcc γ phase. The amount of Ni necessary to stabilize nonmagnetic, transformable fcc Fe films in dependence on the residual background pressure during the deposition is determined and a phase diagram revealing the transformable region is presented.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ; ; ;  [1] ;  [1] ;  [2] ;  [4] ;  [2]
  1. Institute of Applied Physics, Vienna University of Technology, 1040 Vienna (Austria)
  2. (Czech Republic)
  3. (Pakistan)
  4. Institute of Physical Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2, 616 69 Brno (Czech Republic)
Publication Date:
OSTI Identifier:
22217713
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CARBON MONOXIDE; DEPOSITION; FCC LATTICES; ION BEAMS; IRON ALLOYS; IRRADIATION; NICKEL ALLOYS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; THICKNESS; THIN FILMS