UF_3010_jandrew.pptx

Multiferroic composites zheng et al 2004 science

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Unformatted text preview: Florida Multiferroics: Nanocomposites Approach •  Nanoparticle/nanoparticle composites –  Plagued by porosity, interfacial cracking, poor phase stability •  Ferroelectric polymer based nanoparticle approaches –  Magnetic nanoparticles: Synthesis and Properties –  Ferroelectric polymer: Processing and Properties –  Ferroelectric polymer-magnetic nanoparticle composites: Processing and Properties •  Bi-phasic ceramics Andrew Research Group - University of Florida Thin Film Multiferroic Composites Zheng, et. al (2004) Science Andrew Research Group - University of Florida Epitaxy: Beyond Thin Films •  Enhanced magnetoelectric coefficient in nanofibers Zhang, C., et al., Appl. Phys. Lett. 94, 102907, 2009. Andrew Research Group - University of Florida Electrospinning Biphasic Fibers •  Polymer Composites Roh, K.- H., Nat. Mater., 2005. Barium Titanate V •  Ceramic Composites –  sol-gel precursors Cobalt Ferrite Andrew Research Group - University of Florida Electrospinning Fibers Taylor Cone Li, D., et. al. Adv. Mater., 16, 1151 (2004) Andrew Research Group - University of Florida Putting it together: BaTiO3-CoFe2O4 J. D. Starr, J. S. Andrew, ChemComm, 49, 4151, 2013. Andrew Research Group - University of Florida Confirmation of Biphasic Nature   EDS confirms the lighter region is BaTiO3 and the darker regions are CoFe2O4 J. D. Starr, J. S. Andrew, ChemComm, 49, 4151, 2013. Andrew Research Group - University of Florida Magnetic Properties •  Ferromagnetic properties of the BaTiO3-CoFe2O4 composites are confirmed through magnetization measurements •  The saturation magnetization of the composite is ~43% of pure cobalt ferrite fibers J. D. Starr, J. S. Andrew, ChemComm, 49, 415...
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This note was uploaded on 01/16/2014 for the course EMA 3010 taught by Professor Unknown during the Fall '08 term at University of Florida.

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