Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe–Co alloy nanoparticle/polystyrene nanocomposite

Effect of induced uniaxial magnetic anisotropy on ferromagnetic resonance frequency of Fe–Co alloy nanoparticle/polystyrene nanocomposite

An Fe–Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, Hfix (50kOe), from a mixture of the Fe–Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to Hfix and th...

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Veröffentlicht in:Scripta materialia 2014-04, Vol.76, p.65-68
Hauptverfasser: Kura, Hiroaki, Hata, Kotaro, Oikawa, Tadaaki, Takahashi, Migaku, Ogawa, Tomoyuki
Format: Artikel
Sprache:eng
Schlagworte:
Assembly
Ferromagnetic resonance
Fe–Co nanoparticle
Induced uniaxial magnetic anisotropy
Intermetallic compounds
Magnetic anisotropy
Magnetic fields
Nanocomposite
Nanocomposites
Nanoparticles
Nanostructure
Polystyrene resins
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Beschreibung
Zusammenfassung:An Fe–Co nanoparticle assembly with uniaxial nanostructure was successfully obtained as a nanocomposite with polystyrene, which was polymerized in a magnetic field, Hfix (50kOe), from a mixture of the Fe–Co nanoparticles and styrene monomer. The easy axis of magnetization was parallel to Hfix and the uniaxial magnetic anisotropy field of the nanocomposite was estimated to be 2.5kOe. The ferromagnetic resonance frequency of the nanocomposite reached 6.8GHz, which was larger than that of the nanocomposite prepared without Hfix.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2013.12.018