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  • 1
    Electronic Resource
    Electronic Resource
    The tunneling gap of high T"C-superconductors
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 162-164 (1989), S. 837-840 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(89)90488-7
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  • 2
    Electronic Resource
    Electronic Resource
    Lateral interactions in coadsorbate layers: Vibrational frequency shifts (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 111 (1999), S. 2115-2122 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The effect of coadsorbed argon, hydrogen, and oxygen on the internal vibration of CO on Ru(001) has been studied by infrared absorption spectroscopy in order to disentangle electrostatic and chemical frequency shifts. Ar is expected to lead only to the former, H only to the latter, and O to a combination. In all cases, intermolecular interactions among CO molecules are avoided by working at very low CO coverages (0.01–0.03 ML). Interestingly, the observed frequency shifts are discrete rather than continuous which is attributed to a local interaction. Density functional calculations for suitable clusters have been used to model the frequency shifts, arriving at good agreement with experiment. Analysis of these theoretical results is then used to quantify the contributions of electrostatic fields and of chemical effects on these shifts. It is shown that, despite very different signatures of the various coadsorbate species, the observed C–O frequency shifts are largely of electrostatic origin, provided one uses the electrostatic field generated by the coadsorbate and not an effective constant field. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.479481
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  • 3
    Electronic Resource
    Electronic Resource
    Apparatus for detecting the homogeneity of large area high-Tc superconducting thin films (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1570-1573 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new apparatus using the inductance method has been built to test the homogeneity of large area high-Tc superconducting thin films. The apparatus has an X–Y scanning probe that can be moved at liquid nitrogen temperature to test the different regions of the films. The sample chamber of the apparatus can provide large area with high temperature homogeneity. The maximum sample size that can be measured is 50×50 mm2. A small size of high-Tc superconducting thin film is applied to test the temperature homogeneity of the testing system and the sameness of the gap distance between the surface of the film and probe. A method for testing the apparatus is illustrated, and some experiments for the test of the apparatus have been performed. Experimental results find that the maximum temperature difference is 0.05 K at the surface of the sample mounter, and the drive field remains constant within the error of 5% in the process of X–Y scanning. The apparatus can test the homogeneity of high-Tc superconducting films not only by the superconducting transition temperature Tc, but also by the critical sheet current density Kc. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146888
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  • 4
    Electronic Resource
    Electronic Resource
    Growth and structural analysis of GdBa2Cu3O7 superconducting thin films on MgO single-crystal substrates (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2320-2322 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin films of GdBa2Cu3O7 superconductor were grown in situ on MgO single-crystal substrates under different substrate temperatures (Ts). When Ts=800 °C, the films were epitaxially grown with the c axis perpendicular to the film surface. The growth quality was very good, but the zero resistance critical temperature (Tc0) was only 85 K and the transition width (ΔTc) was 1.5 K. When Ts=670 °C, some of the films were epitaxially grown with the c axis perpendicular to the film surface. Some were mainly c axis oriented with a small amount of (110) and a-axis orientation. The growth quality was relatively poor, but they had Tc0 of 89–91 K and ΔTc of 0.6–1 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.106056
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  • 5
    Electronic Resource
    Electronic Resource
    In situ preparation of the Gd-Ba-Cu-O superconducting thin films on (100) LaAlO3 by sputtering (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 2454-2455 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-temperature superconductor GdBa2Cu3O7 thin films were grown in situ on LaAlO3 single-crystal substrates by dc magnetron sputtering using a single planar target. 93% samples had a zero resistance transition temperature Tc0 more than 90 K and a transition width less than 1 K. The best films had a Tc0 of 92.5 K, a transition width of 0.57 K, and a critical current density of 3.6×106 A/cm2 at 77 K. The reproducibility is very good. X-ray diffraction analysis showed c axis normal to the film's surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103253
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  • 6
    Electronic Resource
    Electronic Resource
    High T"c superconductivity in the Ba"xY"1"-"xCuO"3"-"y compound system
    Amsterdam : Elsevier
    Solid State Communications 63 (1987), S. 197-200 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(87)90839-8
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  • 7
    Electronic Resource
    Electronic Resource
    Effective error estimates for the numerical solution of Fredholm integral equations (1989)
    Springer
    Computing 42 (1989), S. 353-362 
    Details
    ISSN: 1436-5057
    Keywords: Primary: 65R20 ; 65G99 ; Integral equations ; a posteriori analysis ; computable error bounds ; error estimates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Die vorliegende Arbeit beschreibt die theoretische Grundlage einer a posteriori Fehlerbeschränkungsmethode für Fredholmsche Integralgleichungen zweiter Art. Wir geben Fehlerschranken an, von denen wir dann Fehlerabschätzungen ableiten, die leicht zu berechnen, verläßlich und meist ziemlich genau sind.
    Notes: Abstract This paper describes the theoretical basis of an effective a posteriori error analysis for Fredholm integral equations of the second kind. We present error bounds from which we then derive error estimators that are easily computable, reliable, and in most cases reasonably precise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02243230
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  • 8
    Electronic Resource
    Electronic Resource
    A solid reactant particle in a gaseous pollutant system of variable strength (1972)
    Springer
    Bulletin of environmental contamination and toxicology 7 (1972), S. 65-71 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01684793
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  • 9
    Electronic Resource
    Electronic Resource
    Characterization of GdBa2Cu3O7−x superconducting thin films by a new optical interference fringe method (1994)
    Springer
    Journal of materials science 29 (1994), S. 3702-3704 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract GdBa2Cu3O7−x superconducting thin films, grown on yttrium-stabilized ZrO2 (YSZ) and LaAlO3 (LAO) substrates, were investigated by a new optical interference fringe method. The results show that (i) two sets of interference fringe pattern are observed on the samples grown on LAO substrates when the film thickness is less than 250 nm, one of them coming from the thin film and the other from the substrate; (ii) the fringe patterns vary slightly on different regions of the samples, which means that the perfection of the thin films is non-uniform; and (iii) defects such as grain boundaries and twin lamellae are observed in some samples. The relationship between the fringes and the degree of perfection of the sample is discussed according to the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357337
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