737 research outputs found
Superconducting properties of novel BiSe-based layered LaOFBiSe single crystals
F-doped LaOBiSe superconducting single crystals with typical size of
240.2 mm are successfully grown by flux method and the
superconducting properties are studied. Both the superconducting transition
temperature and the shielding volume fraction are effectively improved with
fluorine doping. The LaOFBiSe sample exhibits
zero-resistivity at 3.7 K, which is higher than that of the
LaOFBiSe polycrystalline sample (2.4K). Bulk
superconductivity is confirmed by a clear specific-heat jump at the associated
temperature. The samples exhibit strong anisotropy and the anisotropy parameter
is about 30, as estimated by the upper critical field and effective mass modelComment: 5 pages, 5 figures, 2 tables, accepted for publication in Europhysics
Lette
1,4-Bis[2-(2-pyridΒyl)-1H-imidazol-1-yl]butane
The title compound, C20H20N6, was isolated from dimethyl sulfoxide solution using 2-(1H-imidazol-2-yl)pyridine and 1,4-dichloroΒbutane in the presence of NaOH
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