Synthesis and magnetic properties of colloidal MnPt3 nanocrystals

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The colloidal synthesis and magnetic properties of MnPt3 nanocrystals are reported. The nanocrystal size depended on the Mn reactant used, but the Mn:Pt stoichiometry was always 1:3. As synthesized, the nanocrystals are compositionally disordered with the face-centered cubic (fcc) A1 phase. Annealing at 580 C changed the MnPt3 crystal structure to the compositionally ordered Ll(2) phase (AuCu3 structure) with higher magnetocrystalline anisotropy. Magnetization measurements showed that the A1 nanocrystals are paramagnetic and the Ll(2) MnPt3 nanocrystals are superparamagnetic.
Publisher
AMER CHEMICAL SOC
Issue Date
2006-10
Language
English
Article Type
Article
Keywords

COBALT FERRITE NANOCRYSTALS; FEPT NANOPARTICLES; HIGHLY CRYSTALLINE; CHEMICAL-SYNTHESIS; SHAPE CONTROL; SIZE CONTROL; MONODISPERSE; SUPERLATTICES; NANORODS; GROWTH

Citation

JOURNAL OF PHYSICAL CHEMISTRY B, v.110, no.42, pp.20906 - 20911

ISSN
1520-6106
DOI
10.1021/jp064050n
URI
http://hdl.handle.net/10203/90518
Appears in Collection
CBE-Journal Papers(저널논문)
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