TITLE

Magnetic and morphological characteristics of nickel nanoparticles films produced by femtosecond laser ablation

AUTHOR(S)
Ausanio, G.; Barone, A.C.; Iannotti, V.; Lanotte, L.; Amoruso, S.; Bruzzese, R.; Vitiello, M.
PUB. DATE
November 2004
SOURCE
Applied Physics Letters;11/1/2004, Vol. 85 Issue 18, p4103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have used the technique of femtosecond (fs) laser ablation in a vacuum to produce films of nickel nanoparticles. A peculiarity of this fs laser deposition is the significant shape and orientation anisotropy of the nanoparticles, which are oblate ellipsoids with the major axis parallel to the deposition substrate. The deposited films present unique magnetic properties, and, in specific conditions, very high remanence ratios (up to 0.7) accompanied with relatively low values of saturation and coercive fields can be obtained. We have interpreted these results in terms of the mentioned anisotropies, and of the occurrence of a thermally induced in-plane tensile stress, which is a function of the nanoparticles size.
ACCESSION #
14945487

 

Related Articles

  • Near-infrared laser ablation of poly tetrafluoroethylene (Teflon) sensitized by nanoenergetic materials. Yang, Yanqiang; Shufeng Wang; Zhaoyong Sun; Dlott, Dana D. // Applied Physics Letters;8/30/2004, Vol. 85 Issue 9, p1493 

    Laser ablation of Teflon doped with size-selected (30–250 nm) Al nanoparticles is studied. Unlike pure Teflon, which requires a vacuum-ultraviolet or femtosecond excimer laser for ablation, this sensitized Teflon can be ablated with a near-infrared laser. Using 100 ps duration pulses,...

  • Generation of higher harmonics of femtosecond radiation in clusters. Ganeev, R. A.; Bom, L. B. Elouga; Ozaki, T. // Optics & Spectroscopy;Jun2010, Vol. 108 Issue 6, p970 

    The frequency conversion of laser radiation in cluster media is studied by the method of laser ablation of surfaces containing different nanoparticles (Cr2O3, In2O3, Ag, Sn, Au, and Cu). Using plasma that contains In2O3 nanoparticles as an example, it is shown that the resonant amplification of...

  • Femtosecond laser near-field ablation from gold nanoparticles. Plech, Anton; Kotaidis, Vassilios; Lorenc, Maciej; Boneberg, Johannes // Nature Physics;Jan2006, Vol. 2 Issue 1, p44 

    Short-pulse laser ablation is promising owing to the low threshold for material removal from surfaces. In the laser-ablation process, solid material transforms into a volatile phase initiated by a rapid deposition of energy. Explosive boiling can be one of the mechanisms in which matter is...

  • Generation of silicon nanoparticles via femtosecond laser ablation in vacuum. Amoruso, S.; Bruzzese, R.; Spinelli, N.; Velotta, R.; Vitiello, M.; Wang, X.; Ausanio, G.; Iannotti, V.; Lanotte, L. // Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4502 

    We demonstrate that femtosecond laser ablation of silicon targets in vacuum is a viable route to the generation and deposition of nanoparticles with radii of ≈5–10 nm. The nanoparticles dynamics during expansion has been analyzed through their structureless continuum optical...

  • Enhanced giant magnetoimpedance effect in patterned FeNi/FeCo nanostructure. Yi Zhang; Juan Dong; Qingfang Liu; Jianbo Wang // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17C721-1 

    Enhanced giant magnetoimpedance effect has been observed in FeNi/FeCo nanostructure. 50 nm thick patterned FeCo micrometer pillar with in-plane uniaxial anisotropy was deposited on the surface of 100 nm isotropous FeNi magnetic film. The diameter of FeCo pillar is controllable. Before...

  • Coupled technique to produce two-dimensional superlattices of nanoparticles. Renard, C.; Ricolleau, C.; Fort, E.; Besson, S.; Gacoin, T.; Boilot, J.-P. // Applied Physics Letters;1/14/2002, Vol. 80 Issue 2, p300 

    We present an original technique to produce high-quality monodisperse two-dimensional (2D) superlattices of nanoparticles. This technique is based on the diffusion of metal atoms deposited by pulsed-laser ablation technique into the first layer of a 3D-structured mesoporous silica film obtained...

  • In situ monitoring of size distributions and characterization of nanoparticles during W ablation in N2 atmosphere. Landström, L.; Márton, Zs.; Arnold, N.; Högberg, H.; Boman, M.; Heszler, P. // Journal of Applied Physics;8/1/2003, Vol. 94 Issue 3, p2011 

    Nanoparticles were generated by pulsed laser ablation of tungsten in a N[sub 2] ambient at atmospheric pressure. Size distributions and concentrations were monitored in situ versus laser fluence, repetition rate, and ablated spot size, by a differential mobility analyzer and a particle counter....

  • Dynamics of laser ablation of microparticles prior to nanoparticle generation. Lee, Jaemyoung; Becker, Michael F.; Keto, John W. // Journal of Applied Physics;6/15/2001, Vol. 89 Issue 12, p8146 

    To better understand the process of nanoparticle formation when microspheres are ablated by a high-energy laser pulse, we investigated the Nd:YAG laser-induced breakdown of 20 μm glass microspheres using time-resolved optical shadow images and Schlieren images. Time-resolved imaging showed...

  • Gas-phase production of monodisperse lead zirconate titanate nanoparticles. Seol, Kwang Soo; Tomita, Satoshi; Takeuchi, Kazuo; Miyagawa, Takeshi; Katagiri, Takahiro; Ohki, Yoshimichi // Applied Physics Letters;9/2/2002, Vol. 81 Issue 10, p1893 

    Laser ablative technology was used to prepare monodisperse nanoparticles (4-20 nm in diameter) of lead zirconate titanate (PZT). Laser ablation of a PZT ceramic target in oxygen ambience produced amorphous and irregularly shaped PZT nanoparticles. A subsequent on-line thermal treatment performed...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics