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DESIGN OF A NOVEL SAPPHIRE BASED DIELECTRIC RESONATOR TO MEASURE THE SURFACE RESISTANCE OF HIGH TEMP SUPER CONDUCTORS

MISHRA, AWANISH KUMAR
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1061222730

Abstract Details

2003, MS, University of Cincinnati, Engineering : Electrical Engineering.
A sapphire dielectric resonator system has been used to measure the surface resistance of high temperature superconductors. The cavity is made up of a lower superconducting plate, a dielectric puck and a movable upper plate where the sample is placed. The temperature of the lower plate is kept at 4.2 K while the sample is heated independently attached to the end of a sapphire rod. The measurements are performed at TE01d mode. By moving the upper plate, the shift in resonance frequency and the corresponding change in the bandwidth are recorded. The overall system is designed to fit into a continuous flow helium cryostat. Real part of the surface impedance of the sample is related to the change in bandwidth, Λfb, and the imaginary part of the surface impedance is related to the change in resonant frequency, Λf0. Instead of absolute calibration of the chamber, a known oxygen free copper sample was used as the reference. The samples were Seeded Melt Grown (SMG) solid material. The measured surface resistance of the SMG YBCO high Tc materials was comparable to that of the best thin HTS films grown by other techniques.
Dr. Altan M. Ferendeci (Advisor)
97 p.
HTSC; dielectric resonator; surface resistance; ovalue; temode

Recommended Citations

Citations

  • MISHRA, A. K. (2003). DESIGN OF A NOVEL SAPPHIRE BASED DIELECTRIC RESONATOR TO MEASURE THE SURFACE RESISTANCE OF HIGH TEMP SUPER CONDUCTORS [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1061222730

    APA Style (7th edition)

  • MISHRA, AWANISH. DESIGN OF A NOVEL SAPPHIRE BASED DIELECTRIC RESONATOR TO MEASURE THE SURFACE RESISTANCE OF HIGH TEMP SUPER CONDUCTORS. 2003. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1061222730.

    MLA Style (8th edition)

  • MISHRA, AWANISH. "DESIGN OF A NOVEL SAPPHIRE BASED DIELECTRIC RESONATOR TO MEASURE THE SURFACE RESISTANCE OF HIGH TEMP SUPER CONDUCTORS." Master's thesis, University of Cincinnati, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1061222730

    Chicago Manual of Style (17th edition)

ucin1061222730
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© 2003, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.