Mössbauer effect in single-crystal Fe1−xS

Autor: A.H. Webster, J.R. Gosselin, M.G. Townsend, R.J. Tremblay
Rok vydání: 1976
Předmět:
Zdroj: Journal of Solid State Chemistry. 17:43-48
ISSN: 0022-4596
DOI: 10.1016/0022-4596(76)90199-7
Popis: Mossbauer spectra have been recorded for single crystals of very nearly stoichiometric FeS and Fe 0.93 S at temperatures between 80 and 600°K. The spectra of nearly stoichiometric FeS indicate that the low-temperature 2C structure with spins ∥ c preserves the spin orientation ∥ c during the structural transformation to 1 C at T α (≐ 420°K). However, because of a miscibility gap, a few percent of the high-temperature 1 C structure with spins ⊥ c is present even at 300°K and the concentration of this component increases with temperature. At T s (≐ 445°K) the spins in the 1 C structure that are ∥ c rotate to ⊥ c . In Fe 0.93 S, the hyperfine splittings indicate that the rotation of the spins from ∥ c to ⊥ c at 170°K is a first-order process.
Databáze: OpenAIRE