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Showing 1 to 20 of 45 for “"Superconducting properties"”.
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Investigation of the Superconducting Properties of Niobium Radio-Frequency Cavities
<p>Radio-frequency (rf) superconducting cavities are widely used to increase the energy of a charged particle beam in particle accelerators. The maximum gradients of cavities made of bulk niobium have constantly improved over the last ten years and they are approaching the theoretical limit of the …
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Superconducting Properties of Tin, Indium, and Mercury Below 1 Degree Kelvin
Made available in DSpace on 2015-05-12T17:12:27Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6202907.PDF: 1885363 bytes, checksum: bde9580259f563ab0c785cf3a0bd9417 (MD5) Previous issue date: 1962
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Niobium-tantalum superlattices grown by beam epitaxy: Structure, transport and superconducting properties
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-09T19:51:05Z No. of bitstreams: 1 1983_durbin.pdf: 5624003 bytes, checksum: f4a556b84b6d6143e82beb6d5b0669dc (MD5)
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The microstructure, mechanical and superconducting properties of (RE)BCO bulk single grains
High-temperature superconducting RE-Ba-Cu-O bulk single grains [(RE)BCO, where RE = Y, Gd, Eu, Sm or Nd] show a wide variability in their mechanical and magnetic flux trapping properties. These variations attribute primarily to variations in the microstructure of (RE)BCO bulk materials. While the …
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Niobium-Tantalum Superlattices Grown by Molecular Beam Epitaxy: Structure, Transport, and Superconducting Properties
Single crystal Nb-Ta superlattices with wavelengths from 20 to 800 (ANGSTROM) were fabricated in this work by Molecular Beam Epitaxy (MBE) techniques. For the first time, electronic mean free paths and crystal domain sizes were much larger than the imposed wavelength in metallic superlattices. …
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Microstructural control and superconducting properties of YBa₂Cu₃O₇₋ₓ melt textured single crystals
… potential for practical applications such as superconducting energy storage systems. Since the levitation force, required specifically for these applications, largely depends on the critical current density and loop size of the superconducting current, large-sized single crystals with high …
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Improvement in the Growth and Superconducting Properties of Bulk Sm-Ba-Cu-O Superconductors Fabricated in Air
… superconductors in air, to further improve their superconducting properties and, finally, to scale-up the fabrication of SmBCO single grains, therefore realising the engineering applications of this technologically important material. A modified seeding technique using an MgO-NdBCO generic seed …
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An electron tunneling investigation of the effects of hydrogen and deuterium impurities on the superconducting properties of lead and indium
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-17T15:55:01Z No. of bitstreams: 1 1981_nedrud.pdf: 4374582 bytes, checksum: 57b3ca73a61ad6a7c21688126cc1512f (MD5)
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The impact of chemically active additions on phase formation and superconducting properties on partially melt processed Bi 2 Sr 2 CaCu 2 O x
… compositional, microstructural, and electrical properties of Bi2Sr2CaCu2O8+d( (Bi-2212) superconductors have been investigated. Objectives of this investigation included understanding the Bi-2212/BaO2 chemistry within bulk and Ag-clad powder-in-tube processed tapes, optimizing the manufacturing …
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The superconducting properties, composition and microstructure of nanocrystalline $A15\ \textnormal{Nb}_{3}(\textnormal{Al}_{1-x}\textnormal{Ge}_{x})$ superconductors for high magnetic field applications
We report on the fabrication and properties of state-of-the-art nanocrystalline $\textnormal{Nb}_{3}\textnormal{Al}_{1-x}\textnormal{Ge}_{x}$ superconductors with 0 ≤ x ≤ 1. High-energy ball milling was used to produce disordered nanocrystalline powders from binary compounds and from pure elemental …
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Active control of superconductivity by means of the ferromagnetic exchange interaction
… in the exchange interaction will increase the superconducting transition temperature (Tc) of the heterostructure. Thus by changing the magnetisation of the ferromagnetic regions it is possible to control the exchange interaction in the superconductor and so the superconducting properties of the …
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Improving the mechanical properties of Y-Ba-Cu-O single grain bulk superconductors
… aim of this work was to improve the mechanical properties of single grain YBCO bulk superconductors without causing significant detrimental effects to the superconducting properties of the material. It is widely acknowledged that large single grains of GdBCO and SmBCO with silver can be batch …
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Growth of spinel oxide thin films for high efficiency room temperature spin filtering
… particular, the suitability of the metallic and superconducting LiTi2O4 as non-magnetic electrode in an almost defect-free CoFe2O4-based spin-filter tunnel junction has been explored. For this purpose, high-quality spinel LiTi2O4 and CoFe2O4 thin films have been deposited by pulsed laser …
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Structural and electronic properties of fulleride superconductors
… fulleride salts with interesting structural and superconducting properties. In superconducting A3C60 systems, it has been widely reported that Tc increases monotonically with interfulleride separation. Of particular interest is the family Na2Rb1-xCsxC60 (0 ≤ x ≤ 1) as they display a much steeper …
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Synthesis, Structure and Transport Properties of New Lanthanum-based Ternary Hydrides
… and ternary hydride design that can stabilize superconducting phases of lanthanum hydrides at reduced pressures while retaining favorable superconducting properties. Four classes of lanthanum-based ternary hydrides were synthesized and characterized under high pressure using diamond anvil …
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Finite element modelling and experimental measurement of the mechanical properties of Nb3Sn multi-filamentary composite superconducting wires
… superconductors used in medium and high field superconducting magnets are Nb3Sn multi-tilamentary composite wires. The mechanical properties of these wires can have a strong bearing on the capabilities of the magnets because their superconducting properties are strongly dependent on the strain …
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A thermogravimetric study of oxygen diffusion in YBa2Cu3O7-d
… temperature superconductors discovered, and its superconducting properties are strongly dependent on oxygen stoichiometry. A large amount of work has been done on the variation of stoichiometry and its effect on the superconducting properties of the material. However, in spite of all the work …
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Superior pinning properties in nano-engineered YBa2Cu3O7-δ
… and correlated to their effects on the superconducting properties of the thin films. In particular two pinning landscapes are investigated: Ba2YNbO6 nanorods are grown in YBa2Cu3O7-δ thin films using a Ba2YNbO6 doped YBa2Cu3O7-δ pulsed laser deposition targets and Ba2(Y/Gd)(Nb/Ta)O6 …
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Thermische Tieftemperatureigenschaften von Seltenerd-Übergangsmetall-Borkarbiden
… present work reports on thermal low-temperature properties of rare earth transition metal borocarbides such as specific heat, thermal conductivity and thermopower. The influence of structural disorder, caused by stoichiometric variations and substitutions of the rare earth element or the …
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