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Title: Magnetic spin structure and magnetoelectric coupling in BiFeO{sub 3}-BaTiO{sub 3} multilayer

Magnetic spin structures in epitaxial BiFeO{sub 3} single layer and an epitaxial BaTiO{sub 3}/BiFeO{sub 3} multilayer thin film have been studied by means of nuclear resonant scattering of synchrotron radiation. We demonstrate a spin reorientation in the 15 × [BaTiO{sub 3}/BiFeO{sub 3}] multilayer compared to the single BiFeO{sub 3} thin film. Whereas in the BiFeO{sub 3} film, the net magnetic moment m{sup →} lies in the (1–10) plane, identical to the bulk, m{sup →} in the multilayer points to different polar and azimuthal directions. This spin reorientation indicates that strain and interfaces play a significant role in tuning the magnetic spin order. Furthermore, large difference in the magnetic field dependence of the magnetoelectric coefficient observed between the BiFeO{sub 3} single layer and multilayer can be associated with this magnetic spin reorientation.
Authors:
; ; ; ;  [1] ; ; ;  [2] ;  [3] ;  [4]
  1. KU Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200 D, 3001 Leuven (Belgium)
  2. Institut für Experimentelle Physik II, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig (Germany)
  3. European Synchrotron Radiation Facility, CS 40220, 38043 Grenoble Cédex 9 (France)
  4. Laboratorium voor Vaste-Stoffysica en Magnetisme, KU Leuven, Celestijnenlaan 200 D, 3001 Leuven (Belgium)
Publication Date:
OSTI Identifier:
22412711
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 8; Other Information: (c) 2015 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; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; COMPARATIVE EVALUATIONS; COUPLING; ELECTRICAL PROPERTIES; EPITAXY; INTERFACES; LAYERS; MAGNETIC FIELDS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; RESONANCE SCATTERING; SPIN; STRAINS; SYNCHROTRON RADIATION; THIN FILMS; TITANATES