Glass magnetic

The frustration effects are implicit in many physical systems, as different as spin glass magnets, adsorbed monomolecular films and liquid crystals [32, 54, 55], In the case of polar mesogens the dipolar frustrations may be modelled by a spin system on a triangular lattice (Fig, 5), The corresponding Hamiltonian consists of a two particle dipolar potential that has competing parallel dipole and antiparallel dipole interactions [321, The system is analyzed in terms of dimers and trimers of dipoles. When the dipolar forces between two of them cancel, the third dipole experiences no overall interaction. It is free to permeate out of the layer, thus frustrating smectic order. 

Evaporated film catalysts are virtually always used with a static gas phase, and with reactant gas pressures less than about 100 Torr. One thus relies upon gaseous diffusion and convection for transport to the catalyst surface. However, provided one is dealing with reaction times of the order of minutes to tens of minutes, gas phase transport has but a negligible effect on the reaction, provided none of the reaction volume is separated from the film by small bore tubulation. Beeck et al. (77) in fact originally used an all-glass magnetically coupled turbine for gas circulation, but this is only... 

Accurately weigh about Ig of clean, dry Ballotini powder and place it into the flotation chamber, half-fill with a known volume of distilled water and drop in the glass magnetic stirrer supplied (be careful as the latter is easily broken). Accurately weigh the dry collection tube and then fit onto the apparatus. 

Porous vycor glass Surface-bound, octahedrally coordinated Fe3+ species obtained in the photolysis of Fe(CO)5 physisorbed onto the glass Magnetically ordered materials were obtained which exhibited magnetic hyperfine fields of 370 and 425 kG 798... 

Examples Metals, plastics, ceramics, ivory, glass, magnetic tape Wood, cellulose nitrate, bone, textiles, leathers, paper, stone, cellulose acetate, paintings, photographic film... 

NANOPARTICLES IN OXIDE GLASSES MAGNETIC RESONANCE STUDIES... 

Nanoparticles in oxide glasses magnetic resonance studies... 

A study on ultrasmoothness polishing of glass magnetic disk substrate... 

Zayat, M. et al. (2003) Highly transparent y-Fe203/Vycor-glass magnetic nanocomposites exhibiting Faraday rotation. Adv. Mater., 15 (21), 1809-1812. 

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