(400-0336)Effect of CrB insertion on the (001) texture of MgO seed layer and magnetic properties of FePt-C HAMR media

摘要

For applications as HAMR media, the FePt-C granular structure has to be optimizedwith excellent alignment of the c-axis normal to the film plane on polycrystalline MgO seed layer.However, poor (001)-textured polycrystalline MgO seed layers result in serious mis-orientations ofFePt grains, in-plane components in the magnetization curve, which will lead to poor SNR. Here, weshow that with 2-nm-thick CrB insertion layer between heat sink and MgO seed layer, the texture andthe surface roughness of the MgO seed layer are significantly improved, thereby reducing the in-planecomponent of the subsequently deposited FePt-C granular layer.