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    Investigation of the Effect of Frequency on the Degaussing of High Tc Superconductors

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    Date
    1991
    Author
    Brown, Geoffrey T.
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    Abstract
    Motion in a model maglev train had been impeded by the buildup of remanent magnetic fields in superconducting YBCO tiles that make up the train's "roadbed." To solve this problem a 60 Hz a-c current had been passed through a series of wire loops situated below the roadbed, thus creating an alternating degaussing magnetic field which disrupted the problematic remanent fields, resulting in smoother train motion. The present study is concerned with the effects of degaussing fields generated at frequencies other than 60 Hz to find possible benefits. Five degaussing frequencies ranging from 60 to 2000 Hz have been tested. The materials used vary in their ability to hold an initial remanent field. Results indicate little frequency dependence in a degaussing field's ability to eradicate remanent fields. The fields are removed simply as a function of degaussing field strength.
    URI
    http://hdl.handle.net/10920/23316
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    • Physics Senior Integrated Projects [325]

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