Pure magnetic hard fct FePt nanoparticles: Chemical synthesis, structural and magnetic properties correlations (Articolo in rivista)

Type
Label
  • Pure magnetic hard fct FePt nanoparticles: Chemical synthesis, structural and magnetic properties correlations (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.matchemphys.2013.12.041 (literal)
Alternative label
  • L. Suber , *, G. Marchegiani , E.S. Olivetti , F. Celegato , M. Coïsson , P. Tiberto , P. Allia , G. Barrera , L. Pilloni , L. Barba, F. Padella , P. Cossari , A. Chiolerio (2014)
    Pure magnetic hard fct FePt nanoparticles: Chemical synthesis, structural and magnetic properties correlations
    in Materials chemistry and physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Suber , *, G. Marchegiani , E.S. Olivetti , F. Celegato , M. Coïsson , P. Tiberto , P. Allia , G. Barrera , L. Pilloni , L. Barba, F. Padella , P. Cossari , A. Chiolerio (literal)
Pagina inizio
  • 186 (literal)
Pagina fine
  • 193 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1016/j.matchemphys.2013.12.041 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 144 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • Scopu (literal)
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  • ISM-CNR, Area della Ricerca di Roma 1, Via Salaria km 29.300, 00015 Monterotondo Scalo, RM, Italy INRIM, Electromagnetism Division, Strada delle Cacce 91, 10135 Torino, Italy DISAT Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy Dipartimento di Chimica, Università di Torino, Via Pietro Giuria 7, 10125 Torino, Italy ENEA, UTTMAT-CHI, Via Anguillarese 10, 00123 S. Maria di Galeria, Roma, Italy IC-CNR, Area Science Park, SS 14 Km 163.5 Basovizza, 34149 Trieste, Italy IGAG-CNR, Area della Ricerca di Roma 1, Via Salaria km 29.300, 00015 Monterotondo Scalo, RM, Italy Istituto Italiano di Tecnologia, Center for Space Human Robotics, Corso Trento 21, 10129 Torino, Italy (literal)
Titolo
  • Pure magnetic hard fct FePt nanoparticles: Chemical synthesis, structural and magnetic properties correlations (literal)
Abstract
  • FePt nanoparticles, containing a near-equal atomic percentage of Fe and Pt, with a face centered tetragonal structure (fct), are challenging for potential applications in high performance permanent magnets and high density data storage. In this study, we report on the chemical synthesis, carried out both solvothermally and hydrothermally in autoclave reacting iron (III) acetylacetonate and platinum (II) acetylacetonate with tri- or tetra-ethylene glycol, these employed as solvents, reducers and particle surface protecting agents as well. In both methods, a subsequent thermal treatment at high temperatures is necessary to transform the magnetic soft face centered cubic (fcc) phase to the hard fct one. Organic low-weight molecules, generally used to protect the nanoparticle surface and avoid particle aggregation, are decomposed by the thermal treatment resulting in particle aggregation and coalescence phenomena; on the contrary, in this case, a polymer matrix is formed as particle protecting agent and, by thermally treating the hydrothermally prepared nanoparticles up to 750 ? C for 1 h, the pure magnetic hard fct phase is obtained while preserving the nanostructure. A detailed study is carried out on FePt nano- particle structure (fcc and fct phases) and correlated to the magnetic properties of the system. (literal)
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