Mössbauer effect in MnFeO3

Abstract

The Mössbauer spectrum of MnFeO3 was measured at 4.2°, 78°, and 300°K. At 300°K the spectrum consists of two overlapping sets of resonances having isomer shifts of +0.496 and +0.478 mm/sec and quadrupole splittings of 1.161 and 0.666 mm/sec, respectively. At 4.2°K the isomer shift increases to +0.61 mm/sec and a magnetic hyperfine splitting, corresponding to an effective field of 469 kOe, is observed. The distribution of Fe3+ ions over the available cation positions was determined from an analysis of the resonance curves.