Enhancement of magnetic properties of Co/Pd multilayered perpendicular magnetic recording media by using Pd/Si dual seedlayer

Soft x-ray magnetic circular dichroism study of [Co/Pd] multilayered perpendicular magnetic films

“…X-ray diffraction and magneto-optical studies revealed that such seedlayers lowered the degree of ͓111͔ preferred orientation of the fcc-͓Co/Pd͔ 20 crystal grains, and produced a magnetically isotropic and mixed initial layer of Co and Pd in the ͓Co/Pd͔ 20 film. 24,25 Furthermore, the state of the initial layer of the ͓Co/Pd͔ 20 film formed on a C seedlayer was found to be quite different from that formed on a Si seedlayer. The interface between the ͓Co/Pd͔ 20 film and the C seedlayer was relatively well-defined, where the effect of surface roughness of the seedlayer was the main factor determining magnetic properties and R/W characteristics of the media.…”

Advancements in PMR thin-film media

“…In 2002, Kubota et al [49] reported on the development of CoCr/Pd multilayers with CoCrRu granular seed layers. Optimization of the growth conditions reduced the slope a of the hysteresis loop at the coercivity and narrowed the switching field distribution suggesting the CoCrRu seed layer is effective in producing exchangedecoupled columnar structures.…”

Effect of the TiN content in the Pd–TiN seed layer on the microstructure and magnetic properties of Co/Pd multilayered media

“…In relation to this issue, intensive studies [6][7][8][9] have been carried out on the [Co/Pd] multilayered media and their seed layers, and especially Pd-based seed layers such as Pd/ITO, 10 PtB/Pd/MgO, 11 Pd-SiN, 12 and Pd/Si (Ref. 13) have been reported to improve magnetic properties of the [Co/Pd] multilayered media. In our previous study, 14 a PdTiN seed layer consisting of Pd seed grains surrounded by a nonmagnetic TiN network was found to be useful for decreasing the intergranular exchange coupling of the [Co/ Pd] multilayered media.…”