Figure 4
(a) Neutron diffraction pattern of nanocrystalline (D = 33 nm) Ho at 50 K after ZFC. The white line marks the direction along which the data have been azimuthally averaged (± 12.5° sector average). (b) Azimuthally averaged neutron intensity as a function of momentum transfer q. Owing to the wavelength spread of the incident neutrons, Δλ/λ ≃ 10%, the q resolution at the peak position (q* ≃ 0.24 Å−1) is about Δq ≃ 0.01 Å−1 (Pedersen et al., 1990). |