http://www.cnr.it/ontology/cnr/individuo/prodotto/ID3267

Magnetic anisotropy in Ni-Si nanoparticle films produced by ultrashort pulsed laser deposition (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Magnetic anisotropy in Ni-Si nanoparticle films produced by ultrashort pulsed laser deposition (Articolo in rivista) (literal)

Anno

2008-01-01T00:00:00+01:00 (literal)

Alternative label

Iannotti, V; Ausanio, G; Campana, C; D'Orazio, F; Hison, C; Lucari, F; Lanotte, L (2008)
Magnetic anisotropy in Ni-Si nanoparticle films produced by ultrashort pulsed laser deposition
in Journal of magnetism and magnetic materials
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Iannotti, V; Ausanio, G; Campana, C; D'Orazio, F; Hison, C; Lucari, F; Lanotte, L (literal)

Pagina inizio

E594 (literal)

Pagina fine

E598 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

320 (literal)

Rivista

Journal of magnetism and magnetic materials (Rivista)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

\"[Iannotti, V.; Ausanio, G.; Hison, C.; Lanotte, L.] Univ Naples Federico 2, Dipartimento Sci Fisiche, CNR, INFM Coherentia, I-80125 Naples, Italy; [Campana, C.] Univ Naples Federico 2, Dipartimento Ingn Mat & Prod, I-80125 Naples, Italy; [D'Orazio, F.; Lucari, F.] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy (literal)

Titolo

Magnetic anisotropy in Ni-Si nanoparticle films produced by ultrashort pulsed laser deposition (literal)

Abstract

Pulsed laser deposition (uPLD) in vacuum by means of subpicosecond laser pulses is a powerful, versatile technique for the production of films constituted by nanoparticles. On impact with the deposition substrate, the nanodrops ejected from the target assume an oblate ellipsoidal shape, solidifying with the major cross-section parallel to the substrate plane. These features and the difficult coalescence among the deposited nanoparticles are peculiar characteristics specific to the films obtained by uPLD. In the case of magnetic nanoparticle films obtained by means of this technique, a magnetization isotropy in the film plane and a hard magnetization axis orthogonal to the film plane are expected. This simple assumption, generated by the specific shape and orientation of the deposited nanoparticles, was not experimentally verified up to now. The present investigation represents the first experimental validation of magnetic anisotropy, determined by the peculiar morphology and topology of the constituent particles, in the uPLD NixSi100-x nanoparticle films. The in-plane isotropic magnetization behaviour, as well as the presence of a hard magnetization axis perpendicular to the sample surface were demonstrated for all investigated films. The difficult coalescence among the magnetic nanoparticles, even at high Ni volume fractions, is confirmed by the behaviour of the initial magnetization curve, typical for single-domain nanoparticles systems. (c) 2008 Elsevier B.V. All rights reserved. (literal)

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