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In this paper, we introduce the unique newly material, the hcp disordered Co-Ir alloy with negative uniaxial magnetic anisotropy, and propose a new concept of the ECC media using this new CoIr-SiO2 granular film instead of conventional soft layer material. In real magnetic writing, negative-Ku grain part plays a role of SUL function. Co-Ir alloys with negative-Ku grain shows soft magnetism in the c-plane due to the high crystallographic symmetry. Within the frame work of this presentation, simulation of magnetization reversal by LLG equation for this stacked media will be also discussed.
Date of Conference: 8-12 May 2006