Single Stuff Morphology, Structure and Magnetic Properties of (Tb0.3Dy0.7Fe2)100-xFex Nanogranular Films Produced by Ultrashort Pulsed Laser Deposition Published: 2006 Nanotechnology 17 536-542 doi:10.1088/0957-4484/17/2/033. By G. Ausanio, A. C. Barone, V. Iannotti, P. Scardi, M. DŽIncau, S. Amoruso, M. Vitiello, and L Lanotte.
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-xFex 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.Publication website | ||||||||||
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