Mössbauer investigations of the FeCoNiPdx and CrxFeCoNiPd high entropy alloys
Résumé
Two series of FeCoNiPd x and Cr x FeCoNiPd high entropy alloys were investigated using SEM-EDX, XRD technique and Mössbauer spectroscopy. Increasing of Pd content in the FeCoNiPd x samples only slightly influenced the Mössbauer spectra. They were analysed assuming simultaneous presence of hyperfine field and quadrupole splitting distributions, however random direction of observation relative to B hf and EFG caused the average QS value to be close to zero. Increasing of Cr content in the Cr x FeCoNiPd samples resulted in strong decrease of the hyperfine field, its distribution becomes wide and influence of B IS B , () hf hf and EFG on the Mössbauer spectra can not be separated unambiguously. The decomposing of the HEAs compositions into binary artificial Fe-dopant systems, namely [FeCoNi]-Pd and [FeCoNiPd]-Cr, allowed to interpret the magnetic structure of the two investigated series.
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