Antiferromagnetism in hcp Iron-Manganese Alloys
- 1 July 1971
- journal article
- research article
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 31 (1) , 102-108
- https://doi.org/10.1143/jpsj.31.102
Abstract
Antiferromagnetism in hcp Fe-Mn alloys (17.8, 25.9 and 28.6 at %Mn) was investigated by means of Mössbauer effect and neutron diffraction measurements. Néel temperatures and internal magnetic fields at 0°K were determined to be 230°K and 16 kG, respectively, over the composition range of the measured alloys. Consequently, hcp alloys have weaker internal magnetic fields and lower Néel temperatures than the fcc modifications. In the neutron diffractions on powder and sheets with preferred orientation of hcp Fe 0.714 Mn 0.289 , only (001) magnetic reflection was found. The averaged magnetic moment was evaluated to be 0.25 µ B assuming the antiferromagnetic stacking of ferromagnetic (001) sheets. Isomer shifts relative to bcc Fe and quadrupole splittings of hcp alloys are extrapolated to the zero Mn concentration to be -0.20 mm/sec and 0.14 mm/sec, respectively. The results are discussed in connection with magnetism in hcp Fe.Keywords
This publication has 6 references indexed in Scilit:
- Antiferromagnetism of γ-FeMn AlloysJournal of Applied Physics, 1968
- Antiferromagnetism of γ-FeMn Alloys. II. Neutron Diffraction and Mössbauer Effect StudiesJournal of the Physics Society Japan, 1967
- Antiferromagnetism of γ Fe-Mn AlloysJournal of the Physics Society Japan, 1966
- Mössbauer Effect in Iron under Very High PressurePhysical Review B, 1964
- Electrical and Magnetic Study of Iron-Manganese AlloysJournal of the Physics Society Japan, 1964
- Low-temperature specific heat of F.C.C alloys of 3d-transition elementsJournal of Physics and Chemistry of Solids, 1964