Rf properties of high-tc superconductors

C. L. Bohn; J. R. Delayen; D. I. Dos Santos; M. T. Lanagan; K. W. Shepard

doi:10.1109/20.92791

Rf properties of high-t_c superconductors

C. L. Bohn, J. R. Delayen, D. I. Dos Santos, M. T. Lanagan, K. W. Shepard

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Abstract

We have investigated the rf properties of high-T_c superconductors over a wide range of temperature, frequency, and r_f field amplitude. We have tested both bulk polycrystalline samples and thick films on silver substrates. At 150 MHz and 4.2 K, we have measured a surface resistance of 18 µΩ at low rf field and 3.6 m^Ω at an rf field of 270 gauss. All samples showed a strong dependence of the surface resistance on rf field; however, no breakdown of the superconducting state has been observed up to the highest field achieved (320 gauss).

Original language	English (US)
Pages (from-to)	2406-2409
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	25
Issue number	2
DOIs	https://doi.org/10.1109/20.92791
State	Published - Mar 1989

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.92791

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title = "Rf properties of high-tc superconductors",

abstract = "We have investigated the rf properties of high-Tc superconductors over a wide range of temperature, frequency, and rf field amplitude. We have tested both bulk polycrystalline samples and thick films on silver substrates. At 150 MHz and 4.2 K, we have measured a surface resistance of 18 µΩ at low rf field and 3.6 mΩ at an rf field of 270 gauss. All samples showed a strong dependence of the surface resistance on rf field; however, no breakdown of the superconducting state has been observed up to the highest field achieved (320 gauss).",

author = "Bohn, {C. L.} and Delayen, {J. R.} and {Dos Santos}, {D. I.} and Lanagan, {M. T.} and Shepard, {K. W.}",

note = "Funding Information: This work was supported by the U.S. Energy under contract W-31-109-ENG-38 U.S. Army Strategic Defense Command.",

year = "1989",

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T1 - Rf properties of high-tc superconductors

AU - Bohn, C. L.

AU - Delayen, J. R.

AU - Dos Santos, D. I.

AU - Lanagan, M. T.

AU - Shepard, K. W.

N1 - Funding Information: This work was supported by the U.S. Energy under contract W-31-109-ENG-38 U.S. Army Strategic Defense Command.

PY - 1989/3

Y1 - 1989/3

N2 - We have investigated the rf properties of high-Tc superconductors over a wide range of temperature, frequency, and rf field amplitude. We have tested both bulk polycrystalline samples and thick films on silver substrates. At 150 MHz and 4.2 K, we have measured a surface resistance of 18 µΩ at low rf field and 3.6 mΩ at an rf field of 270 gauss. All samples showed a strong dependence of the surface resistance on rf field; however, no breakdown of the superconducting state has been observed up to the highest field achieved (320 gauss).

AB - We have investigated the rf properties of high-Tc superconductors over a wide range of temperature, frequency, and rf field amplitude. We have tested both bulk polycrystalline samples and thick films on silver substrates. At 150 MHz and 4.2 K, we have measured a surface resistance of 18 µΩ at low rf field and 3.6 mΩ at an rf field of 270 gauss. All samples showed a strong dependence of the surface resistance on rf field; however, no breakdown of the superconducting state has been observed up to the highest field achieved (320 gauss).

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Rf properties of high-t_c superconductors

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