Magnetic shielding and harmonic generation in high-T<sub>c</sub> superconducting tubes
J Karthikeyan; A S Paithankar; R Prasad; N C Soni; J Karthikeyan; Laser and Plasma Technol. Div., Bhabha Atomic Res. Centre, Bombay, India; A S Paithankar; Laser and Plasma Technol. Div., Bhabha Atomic Res. Centre, Bombay, India; R Prasad; Laser and Plasma Technol. Div., Bhabha Atomic Res. Centre, Bombay, India; N C Soni; Laser and Plasma Technol. Div., Bhabha Atomic Res. Centre, Bombay, India
Журнал:
Superconductor Science and Technology
Дата:
1994-12-01
Аннотация:
Magnetic shielding and harmonic generation in a sintered Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> tube, subjected to an incident AC magnetic field, has been studied. This study has shown that the onset of superconductivity in the 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 the specimen for frequencies less than 10 kHz. This trapped flux behaves as a superimposed DC magnetic field and results in a low shielding effectiveness and generation of even harmonics in the transmitted waveform.
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