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dc.contributor.author
Lavorato, Gabriel Carlos
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Alzamora, Mariella
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Contreras, Cynthia
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Burlandy, Gabriel
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Litterst, F. Jochen
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Baggio Saitovitch, Elisa
dc.date.available
2020-11-24T15:32:37Z
dc.date.issued
2019-03
dc.identifier.citation
Lavorato, Gabriel Carlos; Alzamora, Mariella; Contreras, Cynthia; Burlandy, Gabriel; Litterst, F. Jochen; et al.; Internal Structure and Magnetic Properties in Cobalt Ferrite Nanoparticles: Influence of the Synthesis Method; Wiley VCH Verlag; Particle & Particle Systems Characterization; 36; 4; 3-2019; 1-11
dc.identifier.issn
0934-0866
dc.identifier.uri
http://hdl.handle.net/11336/118868
dc.description.abstract
The design of novel nanostructured magnetic materials requires a good understanding of the variation in the magnetic properties due to different synthesis conditions. In this work, four different procedures for fabricating Co-ferrite nanoparticles with similar sizes between 7 and 10 nm are compared by studying their structural and magnetic properties. Non-aqueous methods based on the thermal decomposition of metal acetylacetonates at high temperatures, either with or without surfactants, provide highly crystalline nanoparticles with large saturation magnetization values and a coherent reversal of the magnetic moment. However, variations in the density of defects and in the shape of the nanocrystals determine the distribution of switching fields and the effective magnetic anisotropy, which reaches up to ≈1 × 107 erg cm−3 for oleic acid-capped 9 nm nanoparticles. It is shown that the saturation magnetization values for nanoparticles produced by different methods are in the range between 49 and 95 emu g−1 due to differences in the stoichiometry, in the cation occupancy, in the magnetic disorder and in the spin canting of the magnetic sub-lattices, the latter evaluated by in-field Mössbauer spectroscopy
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley VCH Verlag
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COBALT FERRITE
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MAGNETIC NANOPARTICLES
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MAGNETIZATION REVERSAL PROCESS
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MOSSBAUER SPECTROSCOPY
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NANOPARTICLE SYNTHESIS
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Nano-materiales
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
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Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Internal Structure and Magnetic Properties in Cobalt Ferrite Nanoparticles: Influence of the Synthesis Method
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-13T20:49:06Z
dc.journal.volume
36
dc.journal.number
4
dc.journal.pagination
1-11
dc.journal.pais
Alemania
dc.journal.ciudad
Weinheim
dc.description.fil
Fil: Lavorato, Gabriel Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Centro Brasileiro de Pesquisas Físicas; Brasil
dc.description.fil
Fil: Alzamora, Mariella. Universidade Federal do Rio de Janeiro; Brasil
dc.description.fil
Fil: Contreras, Cynthia. Centro Brasileiro de Pesquisas Físicas; Brasil
dc.description.fil
Fil: Burlandy, Gabriel. Centro Brasileiro de Pesquisas Físicas; Brasil
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Fil: Litterst, F. Jochen. Centro Brasileiro de Pesquisas Físicas; Brasil. Technische Universitat Carolo Wilhelmina Zu Braunschweig.; Alemania
dc.description.fil
Fil: Baggio Saitovitch, Elisa. Centro Brasileiro de Pesquisas Físicas; Brasil
dc.journal.title
Particle & Particle Systems Characterization
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/ppsc.201900061
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ppsc.201900061
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