Oleg Zabara

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NaAlH(4) doped with CeCl(3) was prepared by ball milling and cycled under hydrogen. As-prepared samples and cycled material were investigated by X-ray absorption spectroscopy in order to elucidate the local structure around Ce atoms in the material. It was found that, in contrast to Ti doped NaAlH(4), the oxidation state of the Ce(iii) remains constant(More)
Measurements of the thermal conductivity as a function of temperature and magnetic field in the 2D dimer spin system SrCu2(BO3)(2) are presented. In zero magnetic field the thermal conductivity along and perpendicular to the magnetic planes shows a pronounced double-peak structure as a function of temperature. The low-temperature maximum is drastically(More)
In order to reduce ac losses in Bi-2223 tapes twisted filaments and different kinds of oxide barriers around filaments have been developed. In this paper, the homogeneity and electromagnetic behavior of these tapes are studied. The magnetic flux density maps over current carrying samples are measured with Hall sensor magnetometer. The homogeneity of tapes(More)
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