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Showing 1 to 15 of 15 for “"superconducting niobium"”.
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Thermal Conductivity of Superconducting Niobium
Made available in DSpace on 2015-05-12T22:38:42Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7121188.PDF: 3255906 bytes, checksum: 9f7c95d301c2a88a1787acfe6a7487ef (MD5) Previous issue date: 1971
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Thermal conductivity of superconducting niobium
… dependence of the thermal conductivity of superconducting niobium have been measured in magnetic fields which ranged .. from zero to above the critical fields, and for temperatures which ranged from 0.31 K to above the transition temperature. Measurements were made on a single crystal …
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Far-Infrared Absorption in Superconducting Niobium Alloys
Made available in DSpace on 2015-05-12T21:41:38Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6706577.PDF: 2096168 bytes, checksum: 6e08bb7e63ba99bcf69c936394942609 (MD5) Previous issue date: 1966
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Far infrared absorption in superconducting niobium alloys
The widths of the energy gaps in bulk samples of transition metal binary alloys of the system Zr - Nb - Mo have been measured by the absorption of far-infrared radiation. The gap edges are sharp and there is no notable structure on the curves. No ,attempt was made to compare the shapes of the …
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Thermal conductivity of superconducting niobium from 0.03K to 4K
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-03-21T19:14:27Z No. of bitstreams: 1 1971_smith.pdf: 3028564 bytes, checksum: 55560bc7f2d59dc0b5e7aa430e0b46e9 (MD5)
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Tunneling density of states behavior in superconducting niobium-titanium.
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1968. B.S.
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Reactive DC magnetron sputtering of ultrathin superconducting niobium nitride films
… was used to deposit few-nanometer-thick films of niobium nitride for fabrication of superconducting devices. Over 1000 samples were deposited on a variety of substrates, under various chamber conditions. Sheet resistance, thickness and superconducting critical temperature were measured for a large …
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Surface Resistance Measurements of Superconducting Niobium Samples with a Triaxial Cavity
… resistance for small samples consisting of superconducting niobium films on copper substrates. It is believed that this work provides the groundwork for future research directed towards solving this important problem. Accurate measurement of surface resistance for such samples is needed to …
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Mechanical and electromagnetic transverse load effects on superconducting niobium-tin performance
… typical geometry for the conductor employed in superconducting magnets for fusion applications. Once energized, the magnets produce an enormous electromagnetic force and very large transverse loads are applied against the strands. This large force results in a degradation of the performance of …
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Acoustic waves in crystals: I. Ultrasonic flux imaging and internal diffraction. II. Imaging phonons in superconducting niobium
… is applied to a study of phonon transport in superconducting niobium, providing the first phonon images of a metal and revealing interesting interactions between phonons and quasiparticles.
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A new surface resistance measurement method with ultrahigh sensitivity
A superconducting niobium triaxial cavity has been designed and fabricated to study residual surface resistance of planar superconducting materials. Unlike many other structures where the test samples are placed in strong magnetic field positions, the edge of a 25.4 mm or larger diameter sample in …
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Experiments to develop High Q and tunable superconducting coplanar resonators applicable for quantum bit technology
Measurements are made on superconducting Niobium on Sapphire and oxidized Silicon microwave coplanar resonators for quantum bit experiments. Device geometry and materials are investigated and quality factors in excess of a million have been observed. The resonant frequency as a function of …
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Enhanced Field Emission Studies on Nioboim Surfaces Relevant to High Field Superconducting Radio-Frequency Devices
… impediment to higher acceleration gradients in superconducting niobium (Nb) radiofrequency cavities for particle accelerators. The strength, number and sources of EFE sites strongly depend on surface preparation and handling. The main objective of this thesis project is to systematically …
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Radio-Frequency Capacitive Gate-based Sensing for Silicon CMOS Quantum Electronics
… resonator. A new circuit topology is used where superconducting niobium nitride (NbN) inductor is connected in parallel with a single-gate Si NWFET resulting in resonators with loaded Q-factors in the 400-800 range. For a resonator operating at 330 MHz, I have achieved a charge sensitivity of 7.7 …