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Title: Structural study of Fe{sub 3}O{sub 4}(111) thin films with bulk like magnetic and magnetotransport behaviour

Post-annealing of Fe{sub 3}O{sub 4} films in a CO/CO{sub 2} atmosphere results in a significant improvement in magnetic and magnetotransport properties with values close to the single crystal bulk of M{sub s} ∼ 480 emu/cm{sup 3} and negative magnetoresistance of 0.05% in a field of 1 T. By using atomic resolution Z-contrast transmission electron microscopy, we show that improved magnetic properties in the annealed films are due to improved structural ordering as a result of the annealing process.
Authors:
 [1] ; ;  [1] ;  [2] ; ;  [3] ;  [3] ;  [4]
  1. Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)
  2. (United Kingdom)
  3. Secure Materials Center, Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan)
  4. (Japan)
Publication Date:
OSTI Identifier:
22273899
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANNEALING; CARBON DIOXIDE; CARBON MONOXIDE; CONTROLLED ATMOSPHERES; IRON OXIDES; MAGNETIC PROPERTIES; MAGNETORESISTANCE; MONOCRYSTALS; THIN FILMS; TRANSMISSION ELECTRON MICROSCOPY