2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 7, July 2000

Table of Contents for this issue

Complete paper in PDF format

Comparison of Power Dependence of Microwave Surface Resistance of Unpatterned and Patterned YBCO Thin Film

Hao Xin, Daniel E. Oates, Member, IEEE A. C. Anderson, R. L. Slattery, G. Dresselhaus and M. S. Dresselhaus

Page 1221.

Abstract:

The effect of the patterning process on the nonlinearity of the microwave surface resistance RS of YBCO thin films is investigated in this paper. With the use of a sapphire dielectric resonator and a stripline resonator, the microwave RS of YBCO thin films was measured before and after the patterning process, as a function of temperature and the RF peak magnetic field in the film. The microwave loss was also modeled, assuming a Jrf2 dependence of ZS(Jrf) on current density Jrf. Experimental and modeled results show that the patterning has no observable effect on the microwave residual RS or on the power dependence of RS.

References

  1. A. C. Westerheim, P. C. McIntyre, S. N. Basu, D. Bhatt, L. S. Yu-Jahnes, A. C. Anderson and M. J. Cima, "Comparison of the surface morphology and microstructure of in situ and ex situ derived YBa2Cu3O7-x thin films", J. Electron. Mater., vol. 22, pp.  1113-1120, 1993.
  2. A. C. Anderson, R. L. Slattery, D. E. Oates and L. S. Yu-Jahnes, "Cylindrical magnetron deposition of high-quality high-temperature superconductive thin films", Lincoln Lab., Lexington, MA, vol. 2, Solid State Res. Quarterly Tech. Rep., pp. 31-33, 1993.
  3. Z. Y. Shen, C. Wilker, P. Pang, W. L. Holstein, D. Face and D. J. Kountz, "High Tc superconductor-sapphire microwave resonator with extremely high Q -values up to 90 K", IEEE Trans. Microwave Theory Tech., vol. 40, pp.  2424-2431, Dec.  1992.
  4. D. G. Blair and A. M. Sanson, "High Q tunable sapphire loaded cavity resonator for cryogenic operation", Cryogenics , vol. 29, pp.  1045-1049, 1989.
  5. D. E. Oates, A. C. Anderson and P. M. Mankiewich, "Measurements of the surface resistance of YBa2Cu3O7-x thin films in stripline resonators", J. Superconduct. , vol. 3, pp.  251-259, 1990.
  6. D. E. Oates, P. P. Nguyen, G. Dresselhaus, M. S. Dresselhaus, C. W. Lam and S. M. Ali, "Measurements and modeling of linear and nonlinear effects in striplines", J. Superconduct., pp.  361-369, 1992.
  7. D. Kajfez and P. Guillon, Dielectric Resonators, Norwood, MA: Artech House, 1986.
  8. D. M. Sheen, S. M. Ali, D. E. Oates, R. S. Withers and J. A. Kong, "Current distribution, resistance and inductance for superconducting strip transmission lines", IEEE Trans. Appl. Superconduct., vol. 1, pp.  108-115, June  1991.
  9. T. van Duzer and C. W. Turner, Principles of Superconductive Devices and Circuits, Amsterdam: The Netherlands: Elsevier, 1981.