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Titolo:
Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices
Autore:
Sun, SH; Murray, CB; Weller, D; Folks, L; Moser, A;
Indirizzi:
IBM Corp, Thomas J Watson Res Ctr, Yorktown Heights, NY 10598 USA IBM Corp Yorktown Heights NY USA 10598 tr, Yorktown Heights, NY 10598 USA IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA IBM Corp San Jose CA USA 95120 p, Almaden Res Ctr, San Jose, CA 95120 USA
Titolo Testata:
SCIENCE
fascicolo: 5460, volume: 287, anno: 2000,
pagine: 1989 - 1992
SICI:
0036-8075(20000317)287:5460<1989:MFNAFF>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CLUSTERS; COLLOIDS; FILMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Sun, SH IBM Corp, Thomas J Watson Res Ctr, Yorktown Heights, NY 10598 USA IBM Corp Yorktown Heights NY USA 10598 town Heights, NY 10598 USA
Citazione:
S.H. Sun et al., "Monodisperse FePt nanoparticles and ferromagnetic FePt nanocrystal superlattices", SCIENCE, 287(5460), 2000, pp. 1989-1992

Abstract

Synthesis of monodisperse iron-platinum (FePt) nanoparticles by reduction of platinum acetylacetonate and decomposition of iron pentacarbonyl in the presence of oleic acid and oleyl amine stabilizers is reported. The FePt particle composition is readily controlled, and the size is tunable from 3- to 10-nanometer diameter with a standard deviation of Less than 5%. These nanoparticles self-assemble into three-dimensional superlattices. Thermal annealing converts the internal particle structure from a chemically disordered face-centered cubic phase to the chemically ordered face-centered tetragonal phase and transforms the nanoparticle superlattices into ferromagnetic nanocrystal assemblies. These assemblies are chemically and mechanically robust and can support high-density magnetization reversal transitions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 21:12:26