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Title: Synthesis of multiferroic Er-Fe-O thin films by atomic layer and chemical vapor deposition

R-Fe-O (R = rare earth) compounds have recently attracted high interest as potential new multiferroic materials. Here, we report a method based on the solid-state reaction between Er{sub 2}O{sub 3} and Fe layers, respectively grown by atomic layer deposition and chemical vapor deposition, to synthesize Er-Fe-O thin films. The reaction is induced by thermal annealing and evolution of the formed phases is followed by in situ grazing incidence X-ray diffraction. Dominant ErFeO{sub 3} and ErFe{sub 2}O{sub 4} phases develop following subsequent thermal annealing processes at 850 °C in air and N{sub 2}. Structural, chemical, and morphological characterization of the layers are conducted through X-ray diffraction and reflectivity, time-of-flight secondary ion-mass spectrometry, and atomic force microscopy. Magnetic properties are evaluated by magnetic force microscopy, conversion electron Mössbauer spectroscopy, and vibrating sample magnetometer, being consistent with the presence of the phases identified by X-ray diffraction. Our results constitute a first step toward the use of cost-effective chemical methods for the synthesis of this class of multiferroic thin films.
Authors:
; ; ; ;  [1] ; ;  [2] ;  [1] ;  [3]
  1. Laboratorio MDM IMM-CNR, I-20864 Agrate Brianza (MB) (Italy)
  2. GEMaC, Université de Versailles St. Quentin en Yvelines-CNRS, Versailles (France)
  3. (Italy)
Publication Date:
OSTI Identifier:
22273825
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; ATOMIC FORCE MICROSCOPY; CHEMICAL VAPOR DEPOSITION; ELECTRONS; ERBIUM OXIDES; IRON COMPOUNDS; LAYERS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MASS SPECTROSCOPY; MOESSBAUER EFFECT; REFLECTIVITY; THIN FILMS; TIME-OF-FLIGHT METHOD; VIBRATING SAMPLE MAGNETOMETERS; X-RAY DIFFRACTION