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Title: Controlled self-assembly of multiferroic core-shell nanoparticles exhibiting strong magneto-electric effects

Ferromagnetic-ferroelectric composites show strain mediated coupling between the magnetic and electric sub-systems due to magnetostriction and piezoelectric effects associated with the ferroic phases. We have synthesized core-shell multiferroic nano-composites by functionalizing 10–100 nm barium titanate and nickel ferrite nanoparticles with complementary coupling groups and allowing them to self-assemble in the presence of a catalyst. The core-shell structure was confirmed by electron microscopy and magnetic force microscopy. Evidence for strong strain mediated magneto-electric coupling was obtained by static magnetic field induced variations in the permittivity over 16–18 GHz and polarization and by electric field induced by low-frequency ac magnetic fields.
Authors:
; ; ;  [1] ;  [1] ;  [2] ;  [3]
  1. Physics Department, Oakland University, Rochester, Michigan 48309-4401 (United States)
  2. (Ukraine)
  3. Chemistry Department, Oakland University, Rochester, Michigan 48309-4401 (United States)
Publication Date:
OSTI Identifier:
22283280
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; 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; 77 NANOSCIENCE AND NANOTECHNOLOGY; ATOMIC FORCE MICROSCOPY; BARIUM COMPOUNDS; CATALYSTS; COMPOSITE MATERIALS; COUPLING; ELECTRIC FIELDS; ELECTRON MICROSCOPY; FERRITES; FERROELECTRIC MATERIALS; MAGNETIC FIELDS; MAGNETOSTRICTION; NANOSTRUCTURES; NICKEL COMPOUNDS; PARTICLES; PERMITTIVITY; PIEZOELECTRICITY; POLARIZATION; STRAINS; TITANATES