Electroplated FePt Films for Micromechanical Magnetic Sensors

Nanostructured FePt films for magnetic media applications

Smaller, faster, denser and cheaper magnetic disk drives are demanded for information storage using magnetic media. Increase in high areal density in magnetic recording requires small bit cells with very small grain size. The reduction of bit cell volume and grain size will eventually be constrained by the undesirable thermal instability of magnetization due to the superparamagnetic effect, thu...

Magnetic hardening in FePt nanostructured films

InSb films for magnetic sensors

InSb films are prepared by a source-temperature-programmed evaporation method and hot-wire recrystalhzatlon lnethod for Hail elements and ma~etor~~stan~ (MR) elements, respecttvely, to reduce nnperfectJons of the crystal structure, and their crystakne and electrical propertles are studied An optimum source-temperature pmgramme 1s mvestlgated and the films thus prepared are used for Hall element...

Flexible magnetic filaments as micromechanical sensors.

We propose a new micromechanical approach to probe bending rigidity at molecular scale. Long flexible filaments made of magnetic colloids and linkers are shown to adopt under magnetic field a hairpin configuration. Measuring the hairpin curvature as a function of the field intensity and the linker length from diffracted light allows us to deduce the linker bending rigidity kappa. The technique ...

Magnetic hardening in ultrafine FePt nanoparticle assembled films

Ultrafine FePt nanoparticles have been synthesized via a novel chemical solution synthesis route. Without using a reducing agent, the stoichiometric FePt nanoparticles were produced by the decomposition of iron acetylacetonate and platinum acetylacetonate in octyl ether in the presence of oleic acid and oleyl amine as the surfactants. The particle size was found to be around 2 nm with a narrow ...