Further evidence on the effect of magnetism on lattice vibrations:the case study of sigma-phase Fe0.525Cr0.455Ni0.020 alloy
arXiv:2201.12261 · doi:10.1016/j.jmmm.2022.169208
Abstract
Sigma-phase Fe0.525Cr0.455Ni0.020 alloy was studied by means of Mössbauer spectrometry in the temperature range of 5-293 K. The average center shift, <CS>, determined from the recorded Mössbauer spectra was shown to significantly deviate from the Debye model in the temperature range below ca. 50 K i.e. in the magnetic state of the sample. The deviation is obviously due to the effect of magnetism on the lattice dynamics of the studied sample. Analysis of the <CS>-data in the paramagnetic phase in terms of the Debye model yielded the value of 437(7) K for the Debye temperature.
10 pages, 4 figures and 16 references