610305.fig.0016
Figure 16: Mössbauer spectra of Fe3Pt alloy. (a) bcc foil thick 4 μm; two sextets: (I) 𝑆 1 = 0 . 7 5 , 𝐻 1 = 3 5 . 3 T; (II) 𝑆 1 = 0 . 2 5 , 𝐻 1 = 3 2 . 3  T; (b) bcc particles of 7 nm size; singlet 𝑆 1 = 0 . 6 9 ; sextet, 𝑆 1 = 0 . 3 1 , 𝐻 1 = 3 3 . 3  T; (c) particles of 20 nm size; singlet 𝑆 1 = 0 . 0 2 ; sextet, 𝑆 2 = 0 . 4 4 , 𝐻 1 = 3 3 . 3  T; “sagged” line 𝑆 3 = 0 . 5 4 ; (d) the same powder after heating at 650°C in vacuum 2.7 × 10−2 Pa for 2 h; singlet 𝑆 1 = 0 . 1 5 ; sextet, 𝑆 1 =0.85, 𝐻 1 = 3 3 . 7  T.