Now showing items 1-7 of 7
Low-temperature phase transitions of Fe3O4 with innocuous dopants
(Elsevier, 1979-04)
Both Zn2+ and Cd2+ dopants on the A-sites in Fe3O4 lead to a loss in the furcation of the lambda anomaly at the Verwey transition but at markedly different dopant levels. Equilibrium adiabatic calorimetry from 5 to 350 K ...
Nuclear gamma ray resonance observation of the activation process in Raney iron and Urushibara iron catalysts
(Elsevier, 1976-06-30)
The phases that form when Raney iron and Urushibara iron catalysts are activated have been studied utilizing 57Fe nuclear gamma ray resonance. For Raney iron catalysts four phases are observed in the activated catalyst; ...
Solid state- and magneto-chemistry of the SrO-Fe2O3 system : III. The non-existence of single-phase "SrFe2O4"
(Elsevier, 1979-11)
A detailed Mossbauer investigation of 1 : 1 SrO : Fe2O3 has shown that a single phase with the SrFe2O4 composition does not exist in the SrO-Fe2O3 system when SrCo3 and Fe2O3 are reacted in air. A multiphase assemblage of ...
121Sb nuclear gamma-ray resonance study of crystal chemical structures in U---Sb---O acrylonitrile catalysts
(Elsevier, 1976-02)
121Sb Nuclear-gamma-ray resonance measurements have been made at 77 [deg]K on USb2O10, USbO5 and on a commerical supported catalyst preparation 60 wt% USb4.6Ox-40 wt% SiO2. The NGR spectrum of USbO5 is consistent with a ...
57Fe hyperfine interaction parameters and selected magnetic properties of high purity MFe12O19 (M=Sr, Ba)
(Elsevier, 1987-05)
Much of the confusion regarding the 57Fe Mossbauer spectroscopic hyperfine parameters of SrFe12O19 and BaFe12O19 at 300 K has been removed by means of an interlaboratory investigation of well-characterized samples prepared ...
Thermal expansion in (La0.62Pb0.38)MnO3: Possible evidence for a coupling between elastic and magnetic exchange forces
(Elsevier, 1973-05)
Using single-crystal, automated diffractometer techniques, the linear coefficient of thermal expansion has been determined for La0.62Pb0.38MnO3 from 298 to 627 K. The linear coefficient of thermal expansion is observed to ...
57Fe Mossbauer investigation of oriented single-crystal and polycrystalline PbFe12O19
(Elsevier, 1991-04-02)
57Fe Mossbauer spectra of PbFe12O19 have been obtained at 295 K on polycrystalline and single-crystal thin sections oriented with the c-axis parallel and perpendicular, respectively, to the [gamma]-ray propagation direction. ...