Author: Patrick A. ZukoskyPublisher:
ISBN:
Category : Dielectric films
Languages : en
Pages : 150
Book Description
Effective Medium Investigation of Thin Film Niobium Nitrides
Author: Patrick A. ZukoskyPublisher:
ISBN:
Category : Dielectric films
Languages : en
Pages : 150
Book Description
Investigation of the Superconductivity of the Niobium Thin Films
Author: Osamu HamanoPublisher:
ISBN:
Category : Thin films
Languages : en
Pages : 142
Book Description
Optical Properties of Ultra-thin Niobium Nitride Films for Single Photon Detectors
Author: Lucy Elizabeth ArcherPublisher:
ISBN:
Category :
Languages : en
Pages : 78
Book Description
In this thesis I made a study of the properties of reactively sputtered ultra-thin films of niobium nitride (NbN) and niobium titanium nitride (NbTiN). Using Variable Angle Spectral Ellipsometry (VASE), I found that the optical properties of NbN films appear to have a critical thickness above which the optical parameters stabilize. I also found that the deposition process has better stability over time for thicker films than for thinner ones; that is, when films are deposited weeks apart, the thinner films show more variation in thickness and optical properties than do the thicker films. The data also suggest that the crystallinity of the substrate upon which the NbN is deposited has a significant effect on the optical parameters. The set of films deposited for the optical study was also tested against a universal scaling law for thin film superconductors, which seems to support the existence of the critical thickness, below which the properties change significantly and do not conform to the power law scaling that holds for thicker films. Finally, I explored recipes for depositing NbTiN with our sputtering system, in the hope of creating films that have better properties than NbN to be used in device manufacturing. I was able to create films with the same properties as our current NbN films with minimal optimization, and further work in this area should result in NbTiN films that are better than our NbN films.
Superconducting Properties of Niobium Films
Author: Wayne R. HudsonPublisher:
ISBN:
Category : Niobium
Languages : en
Pages : 36
Book Description
Masters Theses in the Pure and Applied Sciences
Author: Wade H. ShaferPublisher: Springer
ISBN:
Category : Education
Languages : en
Pages : 400
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thougtit that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 31 (thesis year 1986) a total of 11 ,480 theses titles trom 24 Canadian and 182 United States universities. We are sure that this broader base tor these titles reported will greatly enhance the value ot this important annual reterence work. While Volume 31 reports theses submitted in 1986, on occasion, certain univer sities do re port theses submitted in previousyears but not reported at the time.
Chemical Vapor Deposition of Niobium Nitride Thin Films and Superconducting Properties
Author: Ching-ho WangPublisher:
ISBN:
Category : Metallic films
Languages : en
Pages : 88
Book Description
The Structure and Electrical and Superconducting Properties of Niobium Nitride Thin Films
Author: Ying Ming ShyNiobium Nitride Based Thin Films Deposited by DC Reactive Magnetron Sputtering
Author: Moushab BenkahoulAnalysis of Bulk and Thin Film Model Samples Intended for Investigating the Strain Sensitivity of Niobium-Tin
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Bulk samples and thin films were fabricated and characterized to determine their suitability for studying the effect of composition and morphology on strain sensitivity. Heat capacity and resistivity data are used to determine the critical temperature distribution. It is found that all bulk samples contain stoichiometric Nb3Sn regardless of their nominal Nb to Sn ratio. Furthermore, in bulk samples with Cu additions, a bi-modal distribution of stoichiometric and off-stoichiometric Nb-Sn is found. Thus the nominally off-stoichiometric bulk samples require additional homogenization steps to yield homogeneous off-stoichiometric samples. A binary magnetron-sputtered thin film has the intended off-stoichiometric Nb-Sn phase with a mid-point critical temperature of 16.3 K. This type of sample is a suitable candidate for investigating the strain sensitivity of A15 Nb{sub 1-?}Sn{sub {beta}}, with 0.18
Investigation of Niobium Nitride Thin Films and Nanoparticles Grown by Pulsed Laser Deposition and Thermal Diffusion
Author: Ashraf Hassan FarhaPublisher:
ISBN:
Category : Nanoparticles
Languages : en
Pages : 458
Book Description