纬-Fe 2 O 3 has a spinel structure containing cation vacancies and is expected to function as cathode material in the secondary Li-ion batteries for lithium insertion/extraction. Lithium was chemically inserted into 纬-Fe 2 O 3 using 0.5M solution of n-butyl lithium hexane and the crystal ...
Spinel structureLi-ion secondary battery•Structure analysis by the Rietveld method is made on chemically Li inserted g-Fe2O3.•Li insertion process featured two phase reaction between Li lean and Li rich phases.•For Li rich phase, the iron occupancy of 16c was not equalized with that ...
Structure of α-Fe2O3 single crystal surfaces following Ar+ ion bombardment and annealing in O2 The surface stoichiometry and structure of α-Fe2O3(0001) and (10ovbar|12) natural growth faces has been studied with X-ray photoemission and LEED followin......
Crystal structure transformation of TiO 2 in presence of Fe 2 O 3 and NiO in air atmosphere[J] . S. Riyas,V. Ahmed Yasir,P. N. Mohan Das.Bulletin of Materials Science . 2002 (4)Riyas S., Yasir Ahmed V. and Das P. N. Mohan, "Crystal structure transformation of TiO2 in presence...
Crystal structure of γ-Li_xFe_2O_3,inserted Li electrochemically,was studied by Moss- bauer spectroscopy together with X-ray diffraction,XPS and electrochemical method,On the insertion of Li at low current density,the crystal structure is keeping original spinel; while at higher current density ...
(H3O)Fe(SO4)2 is a compound that precipitates from the most acidic solutions in the system Fe2O3-SO3-H2O. We have solved the structure of this phase from synchrotron powder X-ray diffraction (XRD) data in the space group P-1. The lattice parameters are a = 4.8087(1) , b = ...
The crystal structure of β‐Ga2O3has been determined from single‐crystal three‐dimensional x‐ray diffraction data. The monoclinic crystal has cell dimensionsa=12.23±0.02,b=3.04±0.01,c=5.80±0.01 A and β=103.7±0.3° as originally reported by Kohn, Katz, and Broder [Am. Mineral.42,39...
The crystal structure of α Al 2O 3 was discussed in detail. The rhombohedron crystal cell and the hexagonal cell of α Al 2O 3 were analyzed with different three dimensional illustrations, and the location of ions of both cells were analyzed in depth, by which the distances of main bond...
dielectric properties, magnetic propertiesstructure (solids and liquids)Single crystals of the title compounds are prepared by chemical vapor transport reactions of Fe2O3, TeO2, and FeX3 (X: Cl, Br; 500 °C, 6 weeks).doi:10.1002/chin.201208017Dong ZhangReinhard K. Kremer...
It is found that α‐Fe2O3 nanoparticles with the sticks morphology exhibit the best conductivity response among all the tested phases and morphologies. Moreover, it is predicted that conductivity of different iron oxides can be connected with a number of vacancies in their crystal structure. ...