Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/50001

TitleSynthesis, structural and magnetic characterization of lead-metaniobate/cobalt-ferrite nanocomposite films deposited by pulsed laser ablation
Author(s)Sá, Pedro
Barbosa, J.
Gomes, Isabel T.
Mendes, Jorge A.
Ventura, João
Araújo, João P.
Almeida, B. G.
Issue date2014
PublisherSpringer
JournalApplied Physics A
CitationSá, P., Barbosa, J., Gomes, I. T., Mendes, J. A., Ventura, J., Araújo, J. P., & Almeida, B. G. (2014). Synthesis, structural and magnetic characterization of lead-metaniobate/cobalt-ferrite nanocomposite films deposited by pulsed laser ablation. Applied Physics A, 118(1), 275-281
Abstract(s)Detailed structural, microstructural and magnetic measurements were performed on (PbNb2O6)(1-x) -(CoFe2O4) (x) nanocomposite thin films deposited by laser ablation on Si(001)\Pt substrates, with different cobalt ferrite concentrations. The tuning of the lead concentration, due to the lead volatility, was found to be particularly important in order to obtain the orthorhombic (ferroelectric) lead niobate phase. The lattice parameter of CoFe2O4 was below the bulk value, indicating the presence of compressive strains on this phase. A magnetic anisotropy was observed, which favored the orientation of the magnetization in the direction perpendicular to the plane of the films, for cobalt ferrite concentrations 40-50 %. The shape, stress and magnetocrystalline anisotropy fields on the composites were calculated and compared. It was found that the perpendicular magnetic anisotropy was induced by the presence of strain on the ferrite phase in the films.
TypeArticle
URIhttp://hdl.handle.net/1822/50001
DOI10.1007/s00339-014-8676-9
ISSN0947-8396
e-ISSN1432-0630
Publisher versionhttps://link.springer.com/article/10.1007/s00339-014-8676-9
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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