Effect of nitrogen irradiation on Co / Pd multilayers with perpendicular anisotropy
نویسندگان
چکیده
Developing new media for magnetic storage exhibiting perpendicular anisotropy, instead of the current longitudinal media, is a matter of the utmost importance [1]. The final goal is to produce a nanopatterned media able to overcome the superparamagnetic limit (information is lost due to thermal fluctuations) at room temperature. In this work, it is shown that nitrogen irradiation of thin films with perpendicular anisotropy induces strain and a modification of the magnetic properties without reduction of the film thickness. Therefore, such a technique can be used to induce a magnetic patterning that preserves flatness of the magnetic medium surface [2].
منابع مشابه
Effect of Composition and Thickness on the Perpendicular Magnetic Anisotropy of (Co/Pd) Multilayers
Magnetic materials with perpendicular magnetic anisotropy (PMA) have wide-ranging applications in magnetic recording and sensing devices. Multilayers comprised of ferromagnetic and non-magnetic metals (FM-NM) are interesting materials, as their magnetic anisotropy depends strongly on composition and growth parameters. In this context, (Co/Pd) multilayers have gained huge interest recently due t...
متن کاملEdge-modulated perpendicular magnetic anisotropy in [Co/Pd]n and L10- FePt thin film wires
Thickness modulation at the edges of nanostructured magnetic thin films is shown to have important effects on their perpendicular magnetic anisotropy. Thin film wires with tapered edges were made from [Co/Pd]20 multilayers or L10-FePt films using liftoff with a double-layer resist. The effect of edge taper on the reversal process was studied using magnetic force microscopy (MFM) and micromagnet...
متن کاملUltra-thin Co/Pd multilayers with enhanced high-temperature annealing stability
Understanding the thermal budget of perpendicular materials is crucial for the potential application perpendicular magnetic tunnel junctions. In this paper, we study the effects of high-temperature rapid thermal annealing on the structural and magnetic properties of ultra-thin Co/Pd multilayers deposited at room temperature. It is shown that perpendicular magnetic anisotropy of ultra-thin Co/Pd...
متن کاملControl of magnetic anisotropy and magnetic patterning of perpendicular Co/Pt multilayers by laser irradiation
We report an approach to altering the magnetic properties of 111 textured Co/Pt multilayer films grown on sapphire 0001 substrates in a controlled way using single-pulse laser irradiation. The as-grown films reveal a strong perpendicular magnetic anisotropy induced by interfacial anisotropy. We show that laser irradiation can chemically mix the multilayer structure particularly at the interface...
متن کاملPerpendicular Magnetic Anisotropy in Ion Beam
Co/Ni multilayers display perpendicular magnetic anisotropy and have applications in magnetic devices that could lead to a large increase in the density of magnetic storage. Co/Ni 10-(2 A Co/ 8A Ni) and 10-(2 A Co/ 4A Ni) multilayers were deposited with ion beam sputtering on either ion beam sputtered copper or direct current magnetron sputtered gold buffer layers of various thicknesses. The ef...
متن کامل