Morphology structure and magnetic properties of (Tb0.3Dy0.7Fe2)(100-x)Fe-x nanogranular films produced by ultrashort pulsed laser deposition

AUSANIO, GIOVANNI and IANNOTTI, VINCENZO and AMORUSO, SALVATORE and LANOTTE, LUCIANO (2006) Morphology structure and magnetic properties of (Tb0.3Dy0.7Fe2)(100-x)Fe-x nanogranular films produced by ultrashort pulsed laser deposition. [Pubblicazione su rivista scientifica]

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Abstract

Magnetic films were produced by ultrashort pulsed laser deposition (uPLD) using a rotating multitarget of terfenol-D (nominal composition: Tb0.3Dy0.7Fe2) and iron. The composite films obtained have a nanoparticle morphology typical of material produced by the uPLD technique, where each particle retains the stoichiometry of the parent target material. The co-deposition allows the production of (Tb0.3Dy0.7Fe2)100−x Fex films, where x can range from 0% to 100%. Unlike films obtained by standard nanosecond PLD, pure terfenol-D layers (x = 0) are amorphous, while the addition of iron induces the formation of Fe crystalline nanoparticles inside an amorphous nanogranular matrix of terfenol-D. The magnetic properties depend on the nanoparticle morphology and more strictly on the fraction of iron particles. In particular, it was demonstrated that the exchange interaction between hard magnetic terfenol-D nanoparticles and iron nanoparticles is active in the uPLD films, giving a cumulative magnetic response resulting from an averaging of the properties of the two component phases.

Tipologia di documento:Pubblicazione su rivista scientifica
Settori scientifico-disciplinari MIUR:Non specificato
Stato del full text:Accessibilità ristretta
Data:2006
Altri Autori:G. AUSANIO; A.C. BARONE; IANNOTTI V; P. SCARDI, M. D'INCAU, S. AMORUSO, VITIELLO M; L. LANOTTE
Numero di pagine:6
Intervallo di pagina:pp. 536-542
Volume:17
Dipartimento o Struttura:Dipartimento di Scienze Fisiche
Numero identificativo:10.1088/0957-4484/17/2/033
Titolo rivista/pubblicazione:NANOTECHNOLOGY
Numero di sistema:6400
Depositato il:20 Ottobre 2010 10:00
Ultima modifica:20 Ottobre 2010 10:00

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