Mössbauer Effect in FeF₃

Abstract

The antiferromagnetic compount FeF, is studied by the Mossbauer technique in the temperature range from 300 to 400 "K. A Nitel temperature Ts of (362.4 5 0.2) "K is

Intimately mixed copper, cobalt, and iron fluorides resulting from the insertion of fluorine into a LDH template

“…Indeed, the Mössbauer spectrum of α-FeF 3 is a magnetic component at 300 K, up to T N = 362 K, meaning that the magnetic order temperature is lowered. 33 This result confirms the presence of a second M 3+ cation on Fe 3+ crystallographic sites, here Al 3+ . Moreover, this phenomenon has already been observed in Fe 3+ /Ga 3+ and Fe 3+ /V 3+ mixed fluorides.…”

High-spin Iron Complexes

“…It has recently been shown [91], however, that oxidation takes place unless the preparations are conducted under strict anaerobic conditions. The compound is antiferromagnetic below 363 K [92,93]. Iron(III) fluoride has a unique iron environment compnsmg an almost regular octahedron of fluorines.…”

Low-Temperature Magnetic Anisotropy inAl2O3:Smith1, Mires2 1968Phys. Rev.8000View full textAdd to dashboardCite

“…1 " 5 In particular, an intense central peak characteristic of a paramagnetic material has been observed in Mossbauer spectra of materials containing Fe 3+ ions below the critical temperature. 2 ' 5 ' 6 Some authors have attributed this broadening to fluctuations of the magnetic spins, and have employed some of the various theories of relaxation effects presently available 7 " 11 to interpret their experimental results.…”