Zobrazeno 1 - 10
of 64
pro vyhledávání: '"A. Paszewin"'
Autor:
Gatt, R., Christensen, S., Frazer, B., Hirai, Y., Schmauder, T., Kelley, R. J., Onellion, M., Vobornik, I., Perfetti, L., Margaritondo, G., Morawski, A., Lada, T., Paszewin, A., Kendziora, C.
We have used angular resolved photoemission to measure the angular dependence of the superconducting gap in highly overdoped Bi2212 (Tc=65K). While the node at 45 degrees is conserved, we find substantial deviation from a first order d-wave dependenc
Externí odkaz:
http://arxiv.org/abs/cond-mat/9906070
Publikováno v:
Superconductor Science and Technology. 11:193-199
The properties of single crystals and thin/thick layers of high-T c superconductors (HTS, up to 135 K) made under equilibrium (p, T) conditions of vapour and oxygen are presented. The special high gas pressure apparatus combined with a method of avoi
Autor:
A. Paszewin, H. Szymczak, T. Lada, Andrzej Morawski, H. Marciniak, A. Wisniewski, Kazimierz Przybylski
Publikováno v:
Superconductor Science and Technology. 11:200-206
Here we report a few methods of avoiding formation of the CaHgO 2 phase during annealing and crystallization of mercury based superconducting ceramics. These methods are based on the following principles : rapid temperature raise to pass the temperat
Autor:
A. Paszewin, Andrzej Morawski, Kazimierz Przybylski, T. Lada, A. Wisniewski, H. Marciniak, H. Szymczak
Publikováno v:
Scopus-Elsevier
We report investigations on chemical reactions among flux containing Hg, Ba, Ca, Cu, O and crucibles made of Al/sub 2/O/sub 3/, Y/sub 2/O/sub 3/ and BaZrO/sub 3/. Our research work on oxide superconductors containing mercury allowed us to compose the
Publikováno v:
Physica C: Superconductivity. 254:7-14
Crystals of Hg0.5Pb0.5Ba2Ca4Cu5O12+δ were measured on an X-ray four-circle single-crystal diffractometer and the crystal structure was refined to R = 0.033. The onset of the superconducting transition of the crystals ranges from 101 K-115 K. The spa
Autor:
A. Paszewin, L. Lesne, J. Löhle, Andrzej Morawski, J. Karpinski, T. Lada, H. Schwer, C. Rossel, K. Conder
Publikováno v:
Journal of Superconductivity. 8:515-518
Single crystals of Hgl-xPbxBa2Can-lCunO2n+2+ς(x=0,0.2,0.5; n=2,3,4,5) and infinite layer CaCuO2 compounds have been grown using a high gas pressure. Resistivity measurements have been performed in fields up to 10 T. The Hg0.8Pb0.2-1234 single crysta
Autor:
Andrzej Morawski, L. Lesne, K. Conder, A. Paszewin, T. Lada, J. Karpinski, C. Rossel, H. Schwer
Publikováno v:
Physica C: Superconductivity. 243:10-18
Crystals of Hg0.8Pb0.2Ba2Ca3Cu4O10.14 were measured on an X-ray four-circle single-crystal diffractometer and the crystal structure was refined to R = 0.023. The space group is P4/mmm and the lattice parameters are a = 3.8530(5) A , and c = 18.968(3)
Publikováno v:
Physica C: Superconductivity. 234:10-18
Single crystals of the Hg 1− x Pb x Ba 2 Ca n −1 Cu n O 2 n +2+ δ (x = 0 and 0.2) and infinite-layer CaCuO 2 compounds have been grown using a high gas pressure. The Hg 0.8 Pb 0.2 -1234 single crystals of a size up to 0.5×0.5×0.05 mm 3 have a
Publikováno v:
Applied Superconductivity. 1:591-597
We have investigated sintering behavior of the superconducting silver sheathed wires made of the YBCO type ceramics under high gas pressure. The experimental conditions were chosen as follows : argon or nitrogen, pure or mixed, under pressure of 0.1G
Publikováno v:
Applied Superconductivity. 1:745-754
Uniaxial hot pressing at various regimes of pellets, wires and tapes and multilayered structures (sandwiches) made of the commercial and own 2223 and 2212 ceramics has been performed. Incoming, tested samples have been produced by combination of cold