Iannotti, Vincenzo and Amoruso, Salvatore and Ausanio, Giovanni and Barone, Alberto and Lanotte, Luciano (2009) Ultrafast pulsed laser deposition as a method for the synthesis of innovative magnetic films. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Lingua: English
Title: Ultrafast pulsed laser deposition as a method for the synthesis of innovative magnetic films
Iannotti, VincenzoUNSPECIFIED
Amoruso, SalvatoreUNSPECIFIED
Ausanio, GiovanniUNSPECIFIED
Barone, AlbertoUNSPECIFIED
Lanotte, LucianoUNSPECIFIED
Autore/i: Iannotti V., Amoruso S., Ausanio G., Barone A.C., Campana C., Wang X., Lanotte L.
Date: 2009
Number of Pages: 4
Department: Scienze fisiche
Journal or Publication Title: APPLIED SURFACE SCIENCE
Date: 2009
Volume: 255
Page Range: pp. 5224-5227
Number of Pages: 4
Date Deposited: 21 Oct 2010 06:57
Last Modified: 30 Apr 2014 19:43
URI: http://www.fedoa.unina.it/id/eprint/7618


Exchange-coupled monocomponent magnetic films constituted of disk-shaped Ni and Fe nanoparticles were produced by ultrafast pulsed laser deposition, in vacuum. These films show a peculiar cauliflower-like structure, made of granular agglomerates of nanoparticles sticking to one another with a significant shape and orientation anisotropy. Both as-deposited Ni and Fe films present hysteresis loops with a high in-plane remanence ratio (0.61 and 0.81 at 250 K, respectively), relatively low values of the saturation and coercive fields and a steep slope near coercivity. At temperature of 10 K and 250 K, the magnetization curves confirm the strong influence of the production technique on the topologic structure of these films, and consequently on their magnetic properties. In perspective, the striking and intriguing properties of these nanogranular films appear very promising for potential application as permanent magnets and in data storage technology.


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