Abstract
We report measurements of the r.f. surface resistance of a wide variety of high-T c superconductors in bulk form and as films on silver substrates. Several apparatuses have been constructed and used for measurements at frequencies from 0.15 to 40 GHz and r.f. surface magnetic fields as high as 640 G. In every case in which the field dependence of the surface resistance was measured, the surface resistance increased monotonically with field amplitude through a transition region characterized by a strong field dependence. It then saturated at high field at a value of a few percent of the normal-state surface resistance just aboveT c . In the presence of this field dependence, the frequency dependence of the surface resistance changed from quadratic to less than linear.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. Padamsee,J. Superconduct. 1, 377 (1988).
L. M. Bollinger,Annu. Rev. Nucl. Part. Sci. 36, 475 (1986).
J. Heremans, D. T. Morelli, G. W. Smith, and S. C. Strite, III,Phys. Rev. B 37, 1604 (1988).
M. T. Lanagan, K. C. Goretta, J. P. Singh, G. T. Goudey, J. T. Dusek, D. I. Dos Santos, and R. B. Poeppel, inSuperconductivity and its Applications, H. S. Kwok and D. T. Shaw, eds. (Elsevier, New York, 1988), p. 118.
S. Sridhar and W. L. Kennedy,Rev. Sci. Instrum. 59, 531 (1988).
D. L. Rubin, K. Green, J. Gruchus, J. Kirchgessner, D. Moffat, H. Padamsee, J. Sears, Q. S. Shu, L. F. Sneemeyer, and J. V. Waszsak,Phys. Rev. B 38, 6538 (1988).
J. R. Delayen, C. L. Bohn, and C. T. Roche,Rev. Sci. Instrum., in press.
J. R. Delayen, K. C. Goretta, R. B. Poeppel, and K. W. Shepard,Appl. Phys. Lett. 52, 930 (1988).
D. Kalokitis, A. Fathy, V. Pendrick, R. Brown, B. Brycki, E. Belohoubek, L. Nazar, B. Wilkens, T. Venkatesan, A. Inam, and X. D. Wu,J. Electron. Mater. 19, (1990).
R. C. Taber,Rev. Sci. Instrum., submitted.
C. L. Bohn, J. R. Delayen, U. Balachandran, and M. T. Lanagan,Appl. Phys. Lett. 55, 304 (1989).
C. L. Bohn, J. R. Delayen, D. I. Dos Santos, M. T. Lanagan, and K. W. Shepard,IEEE Trans. Magn. 25, 2406 (1989).
J. R. Delayen and C. L. Bohn,Phys. Rev. B 40, 5151 (1989).
M. T. Lanagan, R. B. Poeppel, J. P. Singh, D. I. Dos Santos, J. K. Lumpp, U. Balachandran, J. T. Dusek, and K. C. Goretta,J. Less-Common Met. 149, 305 (1989).
H. L. Luo, S. M. Green, Yu Mei, and A. E. Manzi, inProc. Workshop on High-Temperature Superconductivity, Huntsville, Alabama, 23–25 May 1989 (GACIAC PR-89-02, Chicago, 1989) p. 189.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Delayen, J.R., Bohn, C.L. & Roche, C.T. Measurements of the surface resistance of high-T c superconductors at high RF fields. Journal of Superconductivity 3, 243–250 (1990). https://doi.org/10.1007/BF00625264
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00625264