(Fe0 7Co0 3)1 N (or FeCoN) alloy single layers and FeCoN film sandwiched between two very thin (5 nm) permalloy layers have been synthesized by RF diode sputtering. The saturation magnetization of the as-deposited FeCoN single layers was found to be around 24.5 kG, the same as the pure Fe0 7Co0 3 alloy; and the minimum hard-axis coercivity was 5 Oe. In contrast, the sandwiched FeCoN films have ...

We report on continued measurements using an experimental model system to quantify intergranular exchange coupling in CoCrPtoxide perpendicular magnetic recording media. A thin film multi-layered structure comprising a high coercivity CoPt unicrystal layer separated from a low coercivity CoPt layer by a thin oxide interlayer is used to model the vertically aligned grains separated by oxide boun...

Cobalt nanowires with controlled diameters have been synthesized using electrochemical deposition in etched ion-track polycarbonate membranes. Structural characterization of these nanowires with diameter 70, 90, 120 nm and length 30 μm was performed by scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray diffraction techniques. The as-prepared wires show uni...

In this paper it is shown that, when there is lack of coercivity with respect to some partial derivatives on the underlying field u , then the relaxation of the functional

The magnetic behavior of Fe lines on top of a continuous FeF 2 antiferromagnetic layer was investigated as a function of the orientation of the lines with respect to the applied magnetic field and a unidirectional anisotropy established by field cooling. The orientational dependence of the asymmetric loop shift, called exchange bias, shows that the competition between shape and unidirectional a...

The coercivity of magnetic thin film having a two-dimensional easy-axis distribution is investigated within the framework of a simple micromagnetic model. It is found that the coercivity decreases from 0.14H(K) to a minimum of 0.07H(K) as thickness increases, where H(K) is the anisotropy field. It is substantially lower than that given by the Stoner-Wohlfarth model and is consistent with availa...

The effects of seedlayer (SL) and preheating on the crystallographic, magnetic, and recording properties of CoCr18Pt16B4 granular perpendicular magnetic media have been investigated. For the media with Ru as underlayer, although higher preheating improves both coercivity and squareness, the media is much noisier. With introducing Ta SL, Ru (0002)/Co (0002) crystallography is greatly enhanced. H...

bled re of along llel to ature while ature polar with . The de of Microstructure and magnetic properties of ferromagnetic Co9Pt nanowire arrays electrodeposited into self-assem anodic alumina templates have been investigated. X-ray diffraction shows that as-prepared Co–Pt nanowires a FCC polycrystalline structure. The nanowires with diameter do80nm are mainly of (1 1 1) preferred orientation th...

For permalloy/CoO multilayers, the exchange field and the coercivity of the perpendicular and longitudinal exchange biasing have been found to decrease with increasing temperature. After zero field cooling, perpendicular magnetic anisotropy is observed. For small permalloy layer thickness, perpendicular anisotropy film can be established at low temperatures. r 2004 Elsevier B.V. All rights rese...