Mössbauer studies of NaFes2 : magnetic hyperfine fields and covalency in MFeS2 compounds (m=Na, k, Rb, Cs)
- 1 January 1977
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 38 (9) , 1161-1162
- https://doi.org/10.1051/jphys:019770038090116100
Abstract
Mössbauer studies of NaFeS2 from room temperature down to liquid helium temperature indicate a magnetic ordering below 77 K. The magnitude of the hyperfine field is 270 kOe at 4.2 K. The measured hyperfine parameters characterize iron in NaFeS 2 to be in the high spin Fe3+ 6S5/2 configuration. We show that in NaFeS2 — as in the other MFeS 2 compounds (M=K, Rb, Cs) - the reduced values of hyperfine fields (150-270 kOe) can be correlated with simple concepts such as transferred hyperfine fields via 4s contribution and cationic electronegativityKeywords
This publication has 2 references indexed in Scilit:
- Point-Charge Model Calculations in a-NaFeO2Physica Status Solidi (b), 1974
- The Concept Of ElectronegativityChemical Reviews, 1955