θ-2θ XRD and RHEED patterns of sample.
(a) Calculated partial DOSs for Fe 3d, Fe 4s, Fe 4p, N 2s, and N 2p states and (b) total DOSs of majority and minority spins in Fe4N.
(a) Calculated photoemission spectra for Fe 3d and Fe 4s states in Fe4N. (b) HX-PES spectrum for Fe4N measured at photon energy of 5953 eV.
AES spectra of the sample (a) before (red curve) and (b) after (blue curve) removing the CaF2 capping layer by Ar ion sputtering.
(a) SRPES spectra of majority (red marks) and minority (blue marks) spin states for Fe4N. (b) Spin polarization of Fe4N deduced from Fig. 5(a).
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