On the Nature of Defects in Mn1 –xFexGe Compounds Synthesized under High Pressure

Iashina, E. G.; Tsvyashchenko, A. V.; Fomicheva, L. N.; Altynbaev, E. V.; Grigoriev, S. V.

doi:10.1134/S1027451020030209

Journal Article

FZJ-2021-00077

On the Nature of Defects in Mn1 –xFexGe Compounds Synthesized under High Pressure

Iashina, E. G. (Corresponding author) ; Altynbaev, E. V. ; Fomicheva, L. N. ; Tsvyashchenko, A. V. ; Grigoriev, S. V.

2020
Springer Science+Business Media Berlin

Journal of surface investigation 14(3), 429 - 433 (2020) [10.1134/S1027451020030209]

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Please use a persistent id in citations: http://hdl.handle.net/2128/26877 doi:10.1134/S1027451020030209

Abstract: The mesostructure of Mn1 – xFex Ge transition-metal monogermanides is studied by small-angle neutron scattering (SANS) and ultra-SANS in a wide concentration range of x = 0.0–1.0.It is shown that the main contribution to the scattering intensity for all concentrations x is made by scattering at crystallites with sharp boundaries and sizes of 1–10 μm, which is described by the squared Lorentzian function. An additional contribution to the scattering intensity as a result of scattering at an ensemble of defects is found as well, which is characteristic of manganese-rich samples. This contribution is well fitted by the power function Q–n with the exponent n = 3. The complementary scattering typical of iron-rich samples is described by an exponential function and also seems to be a part of scattering at sharp-boundary crystallites.

Keyword(s): Engineering, Industrial Materials and Processing (1st) ; Materials Science (2nd)

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