Diffusion in solids studied by nuclear resonant X-ray and neutron scattering

Kaisermayr, M.; Sepiol, B.; Combet, J.; Rüffer, R.; Pappas, C.; Vogl, G.

doi:10.1107/S0909049502004983

Figure 1
Quasielastic spectrum obtained from an Ni₅₁Ga₄₉ single crystal at 1403 K and Q = 1.6 Å^-1 (Kaisermayr et al., 2000

). The dashed and dotted lines represent the two Lorentzians. First inset: B2 unit cell. The arrows represent a jump of an A atom to an NN and an NNN site on the B and A lattice, respectively. Second inset: Q-dependence of the widths $[\Gamma_i]$ and weights w_i of the two Lorentzians as calculated for Ni diffusion via NN jumps with a ratio of residence times $[\tau_{\rm Ga}/\tau_{\rm Ni}]$ = 0.12.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 9| Part 4| June 2002| Pages 210-214

doi:10.1107/S0909049502004983

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