Electromagnetic shielding studies on plasma‐sprayed superconducting high-<i>T<sub>C</sub></i>coatings

Studies on the propagation of AC magnetic field through plasma-sprayed superconducting YIBa2Cu3Ov-~ coatings show that complete shielding is achieved up to a certain critical magnetic field strength Ho. Increase in the thickness or Jc of the specimen increases the Ho value. Flux-trapping occurs in the specimen at high frequencies and the frequency at which it occurs increases with increase in specimen Jc.

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Propagation of a.c. magnetic field through high-T c coatings

Karthikeyan

Paithankar

Chaddah

et al. 1991

Bull. Mater. Sci.

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Study of the propagation of an AC magnetic field through superconducting thick films

Karthikeyan

Paithankar

Chaddah

et al. 1991

Supercond. Sci. Technol.

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Studies of the propagation of a n AC magnetic field through plasma sprayed superconducting Y,Ba,Cu,O,., coatings have been carried out in t h e incident field frequency and intensity ranges 100 Hz to 100 kHz and 0.01 to 3.5 mT respectively. Results show that the shielding effectiveness increases exponentially with decreasing field intensity. Shielding effectiveness increases with coating thickness and its density. Coatings thinner than 100 ,pm do not show any shielding. A non-linear dependence of critical magnetic fieid H* on both thickness and critical current density J, of the specimen has been observed.

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Magnetic shielding and harmonic generation in high-T_csuperconducting tubes

Karthikeyan

Paithankar

Prasad

et al. 1994

Supercond. Sci. Technol.

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Magnetic shielding and harmonic generation in a sintered Y,Ba,Cu,O,., tube, subjected to an incident AC magnetic field, has been studied. This study has shown that t h e onset of superconductivity in t h e specimen introduces a magnetic shielding of about 25 dB. Odd harmonics are generated during the propagation of the AC magnetic field. Flux trapping occurs in t h e specimen for frequencies less than 10 kHz. This trapped flux behaves as a superimposed oc magnetic field and results in a low shielding effectiveness and generation of even harmonics in the transmitted waveform.

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Electromagnetic shielding studies on plasma‐sprayed superconducting high-T_Ccoatings

Cited by 3 publications

References 12 publications

Propagation of a.c. magnetic field through high-T c coatings

Propagation of a.c. magnetic field through high-T c coatings

Study of the propagation of an AC magnetic field through superconducting thick films

Magnetic shielding and harmonic generation in high-T_csuperconducting tubes

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Electromagnetic shielding studies on plasma‐sprayed superconducting high-TCcoatings

Cited by 3 publications

References 12 publications

Propagation of a.c. magnetic field through high-T c coatings

Propagation of a.c. magnetic field through high-T c coatings

Study of the propagation of an AC magnetic field through superconducting thick films

Magnetic shielding and harmonic generation in high-Tcsuperconducting tubes

Contact Info

Product

Resources

About

Electromagnetic shielding studies on plasma‐sprayed superconducting high-T_Ccoatings

Magnetic shielding and harmonic generation in high-T_csuperconducting tubes