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Open AccessFeature PaperArticle

Exploring Reaction Conditions to Improve the Magnetic Response of Cobalt-Doped Ferrite Nanoparticles

1
Department of Inorganic Chemistry, University of the Basque Country, UPV/EHU, Bº Sarriena, 48970 Leioa, Spain
2
BCMaterials, Basque Center for Materials, Applications & Nanostructures, UPV/EHU Science Park, Bº Sarriena, 48970 Leioa, Spain
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(2), 63; https://doi.org/10.3390/nano8020063
Received: 30 November 2017 / Revised: 11 January 2018 / Accepted: 17 January 2018 / Published: 25 January 2018
(This article belongs to the Special Issue Experimental Nanosciences, Computational Chemistry, and Data Analysis)
With the aim of studying the influence of synthesis parameters in structural and magnetic properties of cobalt-doped magnetite nanoparticles, Fe3−xCoxO4 (0 < x < 0.15) samples were synthetized by thermal decomposition method at different reaction times (30–120 min). The Co ferrite nanoparticles are monodisperse with diameters between 6 and 11 nm and morphologies depending on reaction times, varying from spheric, cuboctahedral, to cubic. Chemical analysis and X-ray diffraction were used to confirm the composition, high crystallinity, and pure-phase structure. The investigation of the magnetic properties, both magnetization and electronic magnetic resonance, has led the conditions to improve the magnetic response of doped nanoparticles. Magnetization values of 86 emu·g−1 at room temperature (R.T.) have been obtained for the sample with the highest Co content and the highest reflux time. Magnetic characterization also displays a dependence of the magnetic anisotropy constant with the varying cobalt content. View Full-Text
Keywords: Co-doped ferrite; magnetic nanoparticles; superparamagnetism; anisotropy energy; magnetic properties Co-doped ferrite; magnetic nanoparticles; superparamagnetism; anisotropy energy; magnetic properties
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MDPI and ACS Style

Galarreta, I.; Insausti, M.; Gil de Muro, I.; Ruiz de Larramendi, I.; Lezama, L. Exploring Reaction Conditions to Improve the Magnetic Response of Cobalt-Doped Ferrite Nanoparticles. Nanomaterials 2018, 8, 63. https://doi.org/10.3390/nano8020063

AMA Style

Galarreta I, Insausti M, Gil de Muro I, Ruiz de Larramendi I, Lezama L. Exploring Reaction Conditions to Improve the Magnetic Response of Cobalt-Doped Ferrite Nanoparticles. Nanomaterials. 2018; 8(2):63. https://doi.org/10.3390/nano8020063

Chicago/Turabian Style

Galarreta, Itziar; Insausti, Maite; Gil de Muro, Izaskun; Ruiz de Larramendi, Idoia; Lezama, Luis. 2018. "Exploring Reaction Conditions to Improve the Magnetic Response of Cobalt-Doped Ferrite Nanoparticles" Nanomaterials 8, no. 2: 63. https://doi.org/10.3390/nano8020063

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