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Magnetic field effect aluminum oxide
Magnetic field effect aluminum oxide










This article is cited by 13 publications. This distortion of the M−O octahedra, which is a structural feature of almost all layered materials that contain octahedral bonding frameworks, gives rise to the diamagnetic anisotropy and results in an easy axis or plane of magnetization in the plane of the sheets. The asymmetry of metal−oxygen bonding at the faces of the octahedral layers results in long and short M−O bonds perpendicular to the plane of the sheets. The consistent direction of orientation of the lamellar oxides studied can be rationalized in the framework of a quantitative bond anisotropy model developed by Uyeda ( Phys. Control of the orientation of ionically conducting layered oxides is of interest for practical applications in batteries and fuel cells. Although the degree of orientation, quantified as the Hermans order parameter, was strongly affected by the particle size distribution, in all cases microcrystals with ∼1−2 μm lateral dimensions were found to orient with the magnetic field vector in the layer plane. nH 2O) suspended in epoxy resins was studied by X-ray diffraction using permanent magnets producing a 0.8 T field.The magnetic field-driven orientation of microcrystals of six diamagnetic layered transition metal oxides (HLaNb 2O 7, HCa 2Nb 3O 10♰.5H 2O, KNaCa 2Nb 4O 13, KTiTaO 5, KTiNbO 5, and H 2.2K 1.8Nb 6O 17












Magnetic field effect aluminum oxide