Synthesis and physical property measurements of CoFe2O4:BaTiO3 core-shell composite nanoparticles

Multiferroic nanocomposites were prepared in a core-shell configuration, in which CoFe 2 O 4 (Cobalt ferrite) is the core and BaTiO 3 (Barium Titanate) the shell. The nanocomposites were synthesized by a combination of polymeric and citrate-gel methods. X-ray diffraction attested the CoFe 2 O 4 pres...

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Bibliographic Details
Published inFerroelectrics Vol. 499; no. 1; pp. 76 - 82
Main Authors Oliveira, P.N., Silva, D.M., Dias, G.S., Santos, I.A., Cótica, L.F.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 14.07.2016
Taylor & Francis Ltd
Subjects
Barium
barium titanate
Chemical synthesis
cobalt ferrite
Core-shell
Ferroelectrics
Nanocomposites
Nanoparticles
Physical properties
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Summary:Multiferroic nanocomposites were prepared in a core-shell configuration, in which CoFe 2 O 4 (Cobalt ferrite) is the core and BaTiO 3 (Barium Titanate) the shell. The nanocomposites were synthesized by a combination of polymeric and citrate-gel methods. X-ray diffraction attested the CoFe 2 O 4 presence, in a cubic spinel structure, and the BaTiO 3 , in a tetragonal perovskite structure. Infrared spectroscopy showed the characteristics cobalt ferrite and barium titanate absorption bands. A core-shell microstructure was observed by TEM images. All samples presented ferrimagnetic-like behaviour at room temperature. The results showed that the synthesis method employed was effective to produce nanocomposites in a core-shell configuration.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2016.1172882