FePt granular thin films are considered to be one of the suitable candidates for ultrahigh density perpendicular recording media beyond 1 Tbits/in~2 because of the high magnetocrystalline anisotropy of the L1_0-FePt phase (〜7×l0~7 erg/cc). We previously reported highly L1_0-ordered FePtAg-C nanogranular film as a potential high-density storage medium for heat assisted magnetic recording (HAMR). Although the addition of Ag is known to increase the H_c， the mechanism of H_c enhancement is not clarified yet. In this paper we investigated the Ag distribution in FePtAg-C granular films by aberration-corrected scanning transmission electron microscope-energy dispersive X-ray spectroscopy (STEM-EDS) and X-ray absorption fine structure (XAFS).
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