Pressure induced isostructural insulator to metal transition for SmS is characterised by the presence of an intermediate valence state at higher pressure which cannot be captured density functional theory. As a direct outcome including charge and spin fluctuations incorporated in dynamical mean field theory, we see emergence insulating metallic phases with increasing as function changing valenc...

An approach to β-D-2-aminotalose- and β-D-2-aminoidose-configured carbohydrate mimetics bearing a phenyl substituent is described. Unnatural divalent rigid p-terphenyl-linked C-aryl glycosides with 2.0 nm dimension are available using Suzuki cross-couplings. The key compound, a p-bromophenyl-substituted 1,2-oxazine, was prepared by a stereoselective [3 + 3]-cyclization of a D-isoascorbic acid-d...

Theoperation andperformance of amicro-Hall thruster are characterized.The thruster is coaxial in design,with a 0.5 mm channel width and 4 mm outer diameter. The magnetic circuit includes a samarium cobalt permanent magnet generating approximately 0.7 T at the exit plane and 1 T inside the channel. Operation with a commercial hollow cathode neutralizer is achieved in the 10–40 W power range with...

The initial ratios of neodymium-143 to neodymium-144 in kimberlites ranging in age between 90 x 10(6) to 1300 x 10(6) years from South Africa, India, and the United States are different from the corresponding ratios in the minerals of peridotite inclusions in the kimberlites but are identical to the ratios in the basaltic achondrite Juvinas at the times of emplacement of the respective kimberli...

During top-seeded melt growth of YBa2Cu3O7-y (Y123) single-domained crystal, seed dissolution occurred while the seed is in contact with Ba-Cu-O liquid, and then the dissolved parts were resolidified during cooling. The growth mode of Y123 crystal was directly affected by the resolidification process of the dissolved part. When the melted part of the seed was resolidified to polycrystal, Y123 ...

Mischmetall, an alloy of the light lanthanides, has been used in a variety of organic reactions, either as a coreductant in samarium(II)-mediated reactions (Barbier and Grignard-type reactions, pinacolic coupling reactions) or as the promoter of Reformatsky-type reactions. It has been also employed as the starting material for easy syntheses of lanthanide trihalides, the reactivity of which has...