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The influence of iron substitution on the magnetic properties of hausmannite, Mn2+(Fe,Mn)3+2O4
iron substitution magnetic properties hausmannite Mn2+(Fe,Mn)3+2O4
2012/3/31
The occurrence of hausmannite with an apparent Curie temperature close to 750 K, instead of 41.8 K was recently described from hydrothermally altered manganese ore from the Kalahari manganese field, S...
Interaction between exsolution microstructures and magnetic properties of the magnetite-spinel solid solution
Interaction exsolution microstructures magnetic properties magnetite-spinel solid solution
2012/4/1
Magnetic properties of exsolved samples of the (Fe304t(MgAlz04),_x solid solution weremeasured over the temperature range 4-923 K and were correlated with microstructuresobserved by transmission elect...
Magnetic properties of the magnetite-spinel solid solution: Curie temperatures, magnetic susceptibilities, and cation ordering
Magnetic properties magnetite-spinel solid solution Curie temperatures magnetic susceptibilities cation ordering
2012/4/5
Curietemperatures (Td ofthe (Fe304)x(MgA1204)1-xsolid solution have been deter-minedfrom measurementsofmagneticsusceptibility (x)vs.temperature. Thetrend in Te
vs.composition extrapolates to 0Katx =0...
Structural and Magnetic Properties of Ferrihydrite
Ferrihydrite Ferrimagnetism Antiferromagnetism
2011/12/30
57Fe M鰏sbauer spectra of two synthetic samples of ferrihydrite, recorded at 4.2 K in applied fields of up to 9 T, have been analysed by a mean-field model. The samples exhibit two and six X-ray diffra...
Influence of Silicon and Phosphorus on Structural and Magnetic Properties of Synthetic Goethite and Related Oxides
Electron diffraction Ferrihydrite Goethite Mossbauer spectroscopy Phosphorus Silicon X-ray powder diffraction
2012/1/9
A series of synthetic goethites containing varying amounts of Si and P dopants were characterized by X-ray powder diffraction, electron diffraction, microbeam electron diffraction, and M鰏sbauer spectr...
Cation Distribution, Mossbauer Spectra, and Magnetic Properties of Ferripyrophyllite
Cations Ferripyrophyllite Iron Magnetic properties Mossbauer spectra Pyrophyllite
2012/2/6
A sample of ferripyrophyllite, a mineral with ideal composition Fe2Si4O10(OH)2, was analyzed by Mössbauer spectroscopy, magnetization and magnetic susceptibility measurements. The iron is entirel...