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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Development and study of high-Tc superconductor conductive polymer assemblies

Schougaard, Steen Brian 28 August 2008 (has links)
Not available / text
62

Design of high temperature superconducting Helmholtz coil for MRI system

周美嬋, Chow, Mei-sim. January 2001 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
63

Microstructure characterization of high Tc superconducting thin films and multilayer Josephson junctions

楊曄, Yang, Ye. January 1998 (has links)
published_or_final_version / Physics / Master / Master of Philosophy
64

Design of high temperature superconductor RF probe for low field magnetic resonance imaging scanner

陳喬崔, Chan, Kiu-chui, Eddie. January 2000 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
65

Dissipative behaviour in alloys and high Tc superconducting ceramics

梁凱峰, Liang, Kaifeng. January 1997 (has links)
published_or_final_version / Physics / Doctoral / Doctor of Philosophy
66

Development and test of a high temperature superconducting permanent magnet synchronous motor

Xian, Wei January 2011 (has links)
No description available.
67

An experimental investigation into the joining of bulk high temperature superconductors.

January 2005 (has links)
Current melt texturing processes can only produce high-quality High Temperature Superconducting (HTSC) domains of a few centimetres in size. Increasing the size of the domain by a joining technique is investigated. The parent HTSC melt textured domains of YBa2CU307-li (Y 123), were used in this research to investigate the joining technique. The solder powders used to form the seam were HTSC YbBa2Cu307-li (YbI23), which has a peritectic temperature of approximately 925 cC, Yb2BatCu\07_o (Yb211), Silver Oxide (Ag20) and Y123. A total of 8 different superconducting 'solders' were manufactured using these powders. Microstructural analyses using a scanning electron microscope (SEM) and an optical microscope were conducted on each sample. It was found that mechanisms occurring during the growth of the seam affect the performance of the join. During the growth, three interfaces are formed. The interface between the parent and the growth front produced an excellent join whereas most of the microstructural defects were present at the intersection of the two growth fronts also known as the impingement boundary. The effect of the addition of Yb211 and silver particles to the join were investigated. It was found that although Yb211 particles improve the flux pinning and viscosity of the solder and the silver improves the intergranular critical current density (Jc) [1], they also reduce the effective cross-sectional area of the joined sample. Thus, the amount of non-superconducting particles added needs to be optimised. Transport measurements were taken to evaluate the current carrying capacity of each sample. It was found that Sample 2-A (Yb123 + 5%Ag20) has the highest Jc of approximately 142 A/cm 2 at 80 K while Sample 3-A (Y123 + 5%Ag20) has the poorest Jc of about 37 A/cm2 at 80 K. Resistivity vs. Temperature graphs show that all joined samples were superconducting implying that the joining process was successful in establishing a superconducting join. Magnetic field maps of the parent and joined samples were captured using a Hall Probe. It was found that the joined sample could trap almost 95 % of the field that could be trapped by the parent. From these results, it was concluded that joining HTSC bulk pieces is possible using an external 'soldering' agent. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2005.
68

Interfacial studies of high temperature superconducting Bi₂Sr₂Can-₁Cun 0₂n+₄ and Ag

Fang, Yue 05 1900 (has links)
No description available.
69

Study of phase relationships near 211 YBCO along 211-123 and 211-CuO phase fields : the preparation and characterization of a new phase Y₅Ba₁₀CuOx

Deshpande, Jaylaxmi N. 12 1900 (has links)
No description available.
70

Studies of the vortex state in high-temperature superconductors

Knapp, Daniel. Kallin, Catherine. January 1900 (has links)
Thesis (Ph.D.)--McMaster University, 2006. / Supervisor: Catherine Kallin. Includes bibliographical references (p. 168-177).

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