by Borgatti, Francesco, Pineider, Francesco, Sala, Marco Moretti and Minola, Matteo, Fantechi, Elvira, Ghiringhelli, Giacomo and Brookes, Nicholas B., Braicovich, Lucio and Sangregorio, Claudio
Abstract:
Cobalt ferrite nanoparticles have been attracting considerable interest in the recent years because of the large number of potential applications, including magnetic storage, magnetic fluid hyperthermia and as contrast agents for magnetic resonance imaging. Physical properties of this class of materials depend critically on a number of parameters, including crystallinity, stoichiometry and cation distribution. In this work we have performed a Resonant Inelastic soft X-ray Scattering (RIXS) study on a series of 5 nm cobalt-doped maghemite nanoparticles to obtain direct quantitative information on cation distribution as a function of cobalt doping. We found that the distribution of divalent cobalt is stable in the investigated doping range and slightly different from that of bulk, stoichiometric cobalt ferrite. These results confirm that cobalt doping can be used to finely tune the magnetic properties of nanostructured ferrites without modifying their structural integrity.
Reference:
Resonant Inelastic Soft X-ray Scattering Study of Co-Doped Maghemite Nanoparticles (Borgatti, Francesco, Pineider, Francesco, Sala, Marco Moretti and Minola, Matteo, Fantechi, Elvira, Ghiringhelli, Giacomo and Brookes, Nicholas B., Braicovich, Lucio and Sangregorio, Claudio), In JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, AMER SCIENTIFIC PUBLISHERS, volume 19, 2019.
Bibtex Entry:
@article{ ISI:000462338300085, Author = {Borgatti, Francesco and Pineider, Francesco and Sala, Marco Moretti and Minola, Matteo and Fantechi, Elvira and Ghiringhelli, Giacomo and Brookes, Nicholas B. and Braicovich, Lucio and Sangregorio, Claudio}, Title = {{Resonant Inelastic Soft X-ray Scattering Study of Co-Doped Maghemite Nanoparticles}}, Journal = {{JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY}}, Year = {{2019}}, Volume = {{19}}, Number = {{8}}, Pages = {{4980-4986}}, Month = {{AUG}}, Abstract = {{Cobalt ferrite nanoparticles have been attracting considerable interest in the recent years because of the large number of potential applications, including magnetic storage, magnetic fluid hyperthermia and as contrast agents for magnetic resonance imaging. Physical properties of this class of materials depend critically on a number of parameters, including crystallinity, stoichiometry and cation distribution. In this work we have performed a Resonant Inelastic soft X-ray Scattering (RIXS) study on a series of 5 nm cobalt-doped maghemite nanoparticles to obtain direct quantitative information on cation distribution as a function of cobalt doping. We found that the distribution of divalent cobalt is stable in the investigated doping range and slightly different from that of bulk, stoichiometric cobalt ferrite. These results confirm that cobalt doping can be used to finely tune the magnetic properties of nanostructured ferrites without modifying their structural integrity.}}, Publisher = {{AMER SCIENTIFIC PUBLISHERS}}, Address = {{26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Borgatti, F (Corresponding Author), CNR, ISMN, Via P Gobetti 101, I-40129 Bologna, Italy. Pineider, F (Corresponding Author), Univ Pisa, Dipartimento Chim & Chim Ind, Via Moruzzi 13, I-56124 Pisa, Italy. Borgatti, Francesco, CNR, ISMN, Via P Gobetti 101, I-40129 Bologna, Italy. Pineider, Francesco; Fantechi, Elvira, Univ Pisa, Dipartimento Chim & Chim Ind, Via Moruzzi 13, I-56124 Pisa, Italy. Sala, Marco Moretti; Brookes, Nicholas B., European Synchrotron Radiat Facil, 71 Ave Martyrs, F-38043 Grenoble, France. Minola, Matteo, Max Planck Inst Solid State Res, Dept Solid State Spect, Heisenbergstr 1, D-70569 Stuttgart, Germany. Minola, Matteo; Ghiringhelli, Giacomo; Braicovich, Lucio, CNR, SuPerconducting & Other INnovat Mat & Devices Ins, SPIN, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy. Minola, Matteo; Ghiringhelli, Giacomo; Braicovich, Lucio, Politecn Milan, Dipartimento Fis, Piazza Leonardo Da Vinci 32, I-20133 Milan, Italy. Sangregorio, Claudio, CNR, SuPerconducting & Other INnovat Mat & Devices Ins, SPIN, Via Madonna Piano 10, I-50019 Sesto Fiorentino, FI, Italy.}}, DOI = {{10.1166/jnn.2019.16795}}, ISSN = {{1533-4880}}, EISSN = {{1533-4899}}, Keywords = {{Resonant Inelastic X-ray Scattering; Cobalt-Doped Maghemite; Magnetic Nanoparticles}}, Keywords-Plus = {{ABSORPTION-SPECTRA; FERRITE NANOPARTICLES; ELECTRONIC-STRUCTURE; COFE2O4; SPECTROSCOPY; SPIN}}, Research-Areas = {{Chemistry; Science & Technology - Other Topics; Materials Science; Physics}}, Web-of-Science-Categories = {{Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter}}, ResearcherID-Numbers = {{Borgatti, Francesco/H-9777-2014 Pineider, Francesco/K-9174-2013 Moretti, Marco/AAF-9255-2019 Ghiringhelli, Giacomo/D-1159-2014}}, ORCID-Numbers = {{Borgatti, Francesco/0000-0003-4659-4329 Pineider, Francesco/0000-0003-4066-4031 Moretti, Marco/0000-0002-9744-9976 Ghiringhelli, Giacomo/0000-0003-0867-7748}}, Funding-Acknowledgement = {{University of Pisa {[}PRA_2017_25]}}, Funding-Text = {{The RIXS experiment was made at the beamline ID08 of the ESRF using the AXES spectrometer, property of the CNR and managed jointly by the Politecnico di Milano and the ESRF. We acknowledge the European Synchrotron Radiation Facility for granting access to the facility under experiment nr. HE-3249. Financial support by the University of Pisa through project PRA_2017_25 is acknowledged.}}, Number-of-Cited-References = {{31}}, Times-Cited = {{0}}, Usage-Count-Last-180-days = {{1}}, Usage-Count-Since-2013 = {{19}}, Journal-ISO = {{J. Nanosci. Nanotechnol.}}, Doc-Delivery-Number = {{HQ3VJ}}, Unique-ID = {{ISI:000462338300085}}, DA = {{2020-12-22}}, }
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