We have carried out fluorination on La2NiO4 and La2CuO4+δ. Only a small fraction of fluorine enters the bulk; the rest resides on the surface. The cuprate after fluorination exhibits greater departures from tetragonal ...

Variable-temperature Co-K-EXAFS measurements establish the occurrence of two cobalt sites, probably associated with the two spin states, above 400K. The population of the two Co sites becomes equal around 670 K, at which ...

Optical properties of nanocomposites of GaN nanocrystals, 2–4 nm in diameter, with conjugated polymers such as poly(2-methoxy,5-(2-ethylhexoxy)-1,4-phenylenevinylene (MEHPPV) as well as with phosphors nanoparticles have ...

The effect of Mn substitution on the multiferroic properties of Y CrO3 and LuCrO3 has been investigated. Solid solutions of the type Y Cr1−xMnxO3 and LuCr1−xMnxO3 (x=0.0–0.3) possess orthorhombic structures with Pnma and ...

Based on an isothermal, isobaric simulation the structure and properties of the plastic crystalline phases of C60 and neopentane have been examined. Instantaneous cooling of the plastic crystalline phases of both C60 and ...

Electronic absorption spectroscopy and fluorescence spectroscopy have been used to investigate the interaction of the fullerenes C60 and C70 with diethylaniline, and with aromatic solvents such as benzene. C60 interacts ...

The relative intensity of the Cu 2p satellite in YBa2Cu3O7 compositions where Y is partially substituted by Pr or Ca or Cu by Zn, Ni or Fe decreases with increasing hole concentration, n(h), or decrease in T(c). La1.8Sr0.2CuO4 ...

In solution phase, aliphatic amines add on to fullerenes; vapourization of graphite in presence of methylamine gives nitrogeneous C60 derivatives. Reactions of C60 with SbCl5 and liquid Br2 yield halogen adducts.

Infrared and Raman spectra of N2H6SO4 have been investigated through the phase transitions at 230 K (III-II) and 483 K (II-I) and assignments made to the various vibrational modes. The assignments have been confirmed by ...

Several amine phosphates have been synthesized and their structures elucidated by single crystal X-ray diffraction. The amine phosphates, on reaction with metal ions, give rise to a large variety of metal phosphate structures ...