The Institute of Physics ( IOP ) по журналам "Superconductor Science and Technology"
Отображаемые элементы 1-20 из 2383
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(1993-04-01)Magnetization measurements and high resolution electron microscopy (HREM) have been carried out on the series Y1-xCaxBa2-xLaxCu3O7- delta to determine the correlation between critical current and (001) grain boundaries. ...
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(1994-11-01)The usefulness of a (001) MgO single crystal as a reaction-barrier material for melt processing was examined by investigating the microstructure near the interface between the MgO and melt-textured Y-Ba-Cu-O superconductors. ...
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(1990-06-01)Superconducting (Bi, Pb)-Sr-Ca-Cu-O films with Tc above 100 K were reproducibly obtainable by single-target RF magnetron sputtering and post annealing on a magnesia (100) substrate. Several targets were tried; the ...
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(1994-11-01)High-Tc superconductor three-pole narrow bandpass microstrip filters fabricated from in situ deposited YBCO epitaxial thin films on LaAlO3 substrates are presented. The CAD tool of the filter is EEsof Touchstone Workbench. ...
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(1992-07-01)YBa2Cu3O7- delta thin films were formed on NdGaO3 substrates by laser ablation. Critical temperatures greater than 89 K and critical current densities exceeding 2*106 A cm-2 at 77 K were obtained. The microwave performance ...
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(2000-09-01)Texture development in pure Ag was investigated in order to achieve pure {110}011 textured Ag ribbons that can be used as a substrate for YBa2Cu3O7-x superconducting coated tapes without a buffer layer. Silver ingots were ...
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(1990-12-01)A halide-flux grown large grain size sample of YBa2Cu3O7-x has been found to develop a sharp drop in resistance at 164 K after thermal cycling. Susceptibility measurements show no evidence of a Meissner effect at this ...
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(1991-11-01)The measurement of the normalized noise power spectral density (Sn(f)=Sv(f)/V2) of the YBCO microbridge sows 1/falpha dependence. The key features of the present measurements are as follows: in the normal state, Sn(f) is ...
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(1998-01-01)The formulae for the temperature dependence of the 3D paraconductivity in the vicinity of a superconducting phase transition are derived using the linearized Ginzburg-Landau equations for a two-band model taking into account ...
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(1999-11-01)We report successful fabrication of 3D intrinsic Josephson junctions (IJJs) using c-axis YBCO thin films of 800 nm thickness and Bi-2212 single-crystal whiskers. The stacks of IJJs were prepared by a lateral focused ion ...
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(1992-10-01)The superconductivity, resistivity in the normal state and crystal structure of a Y1-xCaxBa2Cu3-xAlxO6.35 system has been studied using a method in which the coupling between the CuO2 plane and Cu(1)O layer is destroyed ...
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(1990-02-01)A high-Tc RF SQUID made from Y1Ba2Cu3O7- delta ceramic was used to detect a signal from an electromechanical clock. The SQUID operated at liquid nitrogen temperature and could detect a signal of magnitude about 2 Phi 0 ( ...
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(1998-11-01)The method of laser ablation in air, i.e. without the use of a vacuum chamber, was employed to prepare highly oriented Bi-Sr-Ca-Cu-O layers with a critical zero-resistance temperature of K. The properties of these layers ...
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(1991-11-01)An array of four Nb-Al-Al2O3-Nb SIS junctions in series is used as the mixing element in a waveguide mixer at 345 GHz. The area of one junction is 4 mu m2 and its normal state resistance is about 12 Omega , yielding at 345 ...
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(1999-11-01)A superconducting magnetic shield of high-Tc superconductor Bi(Pb)-Sr-Ca-Cu-Ox has been constructed whose diameter is 65 cm and length is 160 cm. We have successfully observed magnetic fields from somatosensory-evoked human ...
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(1996-04-01)This paper presents a basic circuit concept for pulse-driven asynchronous circuits using superconducting rapid single-flux-quantum (RSFQ) logic gates. Today's computer systems perform using a synchronous clock distributed ...
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A brief history of the development of temperature scales: the contributions of Fahrenheit and Kelvin(1991-11-01)As a contribution to the special Kelvin symposium at ISEC, the author describes the very different contributions that Fahrenheit and Kelvin made to the development of temperature scales. He shows that Fahrenheit's approach ...
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(1988-06-01)The authors have used differential scanning calorimetry and X-ray diffraction to study absorption and desorption of oxygen by superconducting Y1Ba2Cu3O7-x. They show that these reactions are reversible and discuss them in ...
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(1992-09-01)Single target magnetron RF sputtering has been used to deposit moderately Pb doped BiSrCaCuO thin films on to unheated (100) MgO substrates. The phase formation after annealing for a short period of time (<or=60 min) was ...
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(1994-03-01)The normal zone propagation in superconducting multifilamentary wires with changing currents was studied both experimentally and theoretically. The quench in a wire was induced by a fast increase in current. It was found ...
Отображаемые элементы 1-20 из 2383