@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00969035v1> a dcat:Dataset ;
    dct:description """
              Nanoparticles made of FePt alloy in a face-centered-tetragonal (fct) structure have agreat interest for the enhancement of data density (> 1 Tbit/in²) in magnetic recordingmedia due to their high magneto-crystalline anisotropy and low critical diameters (3.5 nm).Our works lie in the synthesis of ɣ-FePt nanoparticles controlled in size (4 ≤ Ø ≤ 8 nm) andchemical composition (≈ Fe50Pt50) by thermal decomposition of organometallic precursors.Following ɣ-FePt NPs synthesis, annealing at high temperature is required for a completetransition from fcc to fct structure (L10) that ensure a ferromagnetic behavior at ambient.Despite a non-homogenous chemical composition on each nanoparticles (platinum-rich coreand iron-rich surface), L10 structure has been obtained after annealing under atmosphereAr/H2 (5%), at temperature up to 650°C. To prevent coalescence of FePt NPs duringannealing, tree distinct protection routes have shown their effectiveness: an inert NaClmatrix, an amorphous silica shell or a crystalline MgO shell. This last method shows bestresults in redispersion of L10-FePt nanoparticles after annealing via surface modification ofnanoparticles by PEO-thiol chains (Mn =2000 g.mol-1). A magnetic ink is then formulated inpresence of PS-b-PEO macromolecules. At least, this as-made ink is deposited on a substrateto obtain, after copolymer self-assembly, a hybrid film containing ferromagnetic L10-FePtnanoparticles selectively located into PEO cylindrical domains.
            """ ;
    dct:identifier "NNT: 2013BOR14871" ;
    dct:issued "2026-05-05T19:06:29.314475"^^xsd:dateTime ;
    dct:language "fr" ;
    dct:modified "2026-05-05T19:06:29.314479"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "From elaboration of ferromagnetic nanoparticles made of FePt alloy to their organization mediated by block copolymers self-assembly" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00969035v1/resource/4bd156f2-0ea9-49b5-beab-0b23e28e0234> ;
    dcat:keyword "alliage-fept-l10",
        "chimothechemical-sciencesother",
        "diblock-copolymer-macromolecules",
        "discrete-magnetic-media",
        "encre-magnetique",
        "ferromagnetic-nanoparticles",
        "infoeu-reposemanticsdoctoralthesis",
        "l10-fept-alloy",
        "macromolecules-copolymeres-diblocs",
        "magnec-ink",
        "media-magnetique-discret",
        "nanoparticules-ferromagnetiques",
        "protected-annealing",
        "recuit-protege",
        "theses" ;
    dcat:landingPage <https://theses.hal.science/tel-00969035> .

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    dct:format "HTML" ;
    dct:issued "2026-05-05T19:06:29.332345"^^xsd:dateTime ;
    dct:modified "2026-05-05T19:06:29.294832"^^xsd:dateTime ;
    dct:title "From elaboration of ferromagnetic nanoparticles made of FePt alloy to their organization mediated by block copolymers self-assembly" ;
    dcat:accessURL <https://theses.hal.science/tel-00969035> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://theses.hal.science/tel-00969035> a foaf:Document .