Crystal/chemical structures and magnetic properties of naturally occurring Mn1.7Fe1.3O4
dc.contributor.author | Evans, B. J. | en_US |
dc.contributor.author | Dunham, William Richard | en_US |
dc.contributor.author | Porter, C. | en_US |
dc.contributor.author | Abernathy, Shawn M. | en_US |
dc.contributor.author | Bluncson, Cherie R. | en_US |
dc.date.accessioned | 2010-05-06T21:49:46Z | |
dc.date.available | 2010-05-06T21:49:46Z | |
dc.date.issued | 1988-04-15 | en_US |
dc.identifier.citation | Evans, B. J.; Dunham, W. R.; Porter, C.; Abernathy, S. M.; Bluncson, C. (1988). "Crystal/chemical structures and magnetic properties of naturally occurring Mn1.7Fe1.3O4." Journal of Applied Physics 63(8): 4133-4135. <http://hdl.handle.net/2027.42/70226> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/70226 | |
dc.description.abstract | An unusually pure Mnx Fe3−x O4 sample (x≂1.3) from a regionally metamorphosed ore body is expected to exhibit an approach to thermodynamic equilibrium unattainable in synthetic materials. This expectation is confirmed by the observation of (1) a small tetragonal distortion and (2) a complete ordering of Fe on the B sublattice. 57Fe Mössbauer spectra, obtained at 298, 175, 125, and 92 K and in an external field of 30 kG at 92 K, exhibit magnetic hyperfine splitting requiring the fitting of two subspectra, I and II. At 298 K, Heff =418 kOe, α=0.36 mm s−1 , and ϵ≊0 for the more intense subspectrum I, whereas for II Heff =403 kOe, δ=0.34 mm s−1 , and ϵ≂−0.15 mm s−1 . The two subspectra are not split by a 30 kG external field. Subspectra I and II correspond to Fe3+ ions located on a single magnetic sublattice. Subspectrum II is assigned to Fe3+ ions in regions with locally, large tetragonal distortions as a consequence of Mn3+clustering, which has often been invoked to explain the crystal chemistry and physical properties of Mnx Fe3−x O4 . | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 476271 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/octet-stream | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | Crystal/chemical structures and magnetic properties of naturally occurring Mn1.7Fe1.3O4 | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109‐1055 | en_US |
dc.contributor.affiliationother | Spelman College, Atlanta, Georgia 30314 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/70226/2/JAPIAU-63-8-4133-1.pdf | |
dc.identifier.doi | 10.1063/1.340519 | en_US |
dc.identifier.source | Journal of Applied Physics | en_US |
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dc.owningcollname | Physics, Department of |
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