Zobrazeno 1 - 10
of 59
pro vyhledávání: '"B. Schüpp"'
Autor:
G. Krabbes, S. Paulraj, P. Kanchana, Chinnathambi Sekar, B. Schüpp-Niewa, Bernd Büchner, Rüdiger Klingeler
Publikováno v:
Materials Research Bulletin. 46:675-681
High purity Na0.75CoO2 single crystals have been grown by floating zone method. We found the rotation of feed and seed rods play a crucial role in growing high quality single crystal. Systematic investigations suggest the occurrence of a phase separa
Publikováno v:
Zeitschrift für Naturforschung B. 62:1383-1389
Dark red single crystals of the new phases Ba3YRu0.73(2)Al1.27(2)O8 and Ba5Y2Ru1.52(2)Al1.47(2)O13.5 have been grown from powder mixtures of BaCO3, Y2O3, Al2O3, and RuO2 . The compositions given in the formulas result from the refinements of the crys
Publikováno v:
Solid State Sciences. 7:17-23
Single phase products of La1.2Sr1.8Mn2−xRuxO7 ( 0 ⩽ x ⩽ 0.5 ) were prepared by solid state reaction of La2O3, SrCO3, Mn2O3 and RuO2 in several heating cycles. The samples have been studied by X-ray powder diffraction techniques and the crystal
Publikováno v:
Superconductor Science and Technology. 18:S10-S14
To optimize the superconducting properties of Ni-doped YBCO by selective substitution of Ni dopants on Cu(2) plane sites, the effects of annealing treatments in reduced oxygen atmosphere have been studied. The results indicate that the superconductin
Publikováno v:
Journal of Alloys and Compounds. 381:320-326
Phase relations in the Sm–Ba–Cu–O system in air have been reconsidered and the topology at the liquidus surface has been consistently constructed from both new experimental investigation as well as critical review of literature data. Subsolidus
Publikováno v:
Journal of Applied Physics. 96:3371-3378
Melt-processed samples of YBa2Cu3O7−δ (YBCO) doped with Li additions substituting at Cu(2) plane sites were used to study the effects of doping on the superconducting temperature, critical current density, irreversibility field, upper critical fie
Publikováno v:
Physica C: Superconductivity. 406:107-114
It is found that 0.5–0.7 wt% of Ir, Ru Hf, Ta added to pure Y123 phase strongly reduce the amount of secondary 211 phase. X-ray analysis of the produced samples showed no more than 3 wt% of 211, while the standard melt-processed YBCO usually contai
Publikováno v:
Journal of Solid State Chemistry. 177:1393-1400
Single crystals of the new phase Ba 5 Ru 2− x Al 1+ x−y Cu y O 11 ( x =0.378, y =0.085) have been grown from a powder mixture of BaCO 3 , RuO 2 and CuO in an alumina crucible. The new compound crystallizes isostructurally to Ba 5 Ir 2 AlO 11 . Th
Publikováno v:
Journal of Alloys and Compounds. 361:71-76
The crystal structure of the cuprate Sm 2 Ba 4 Cu 2 O 9 was determined and refined via Rietveld method on an X-ray powder diffraction pattern. The sample was prepared from Sm 2 O 3 , CuO, and BaCO 3 in several heating cycles. The compound Sm 2 Ba 4 C
Publikováno v:
Thin Solid Films. 434:75-81
The crystallization behavior of CoSb3 and Fe-doped (Co,Fe)Sb3 thin films prepared by d.c.-magnetron sputtering was studied via ex situ and in situ X-ray diffraction (XRD) measurements. The as-deposited layers are amorphous. Crystallization takes plac