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# Re: [femm] Permanent Magnet Models Library.

- To: femm@egroups.com
- Subject: Re: [femm] Permanent Magnet Models Library.
- From: Agnaldo Souza Pereira <agnaldo@if.ufrj.br>
- Date: Fri, 28 Apr 2000 13:00:54 -0300
- In-reply-to: <001701bfb107$ba318c40$ce0c310a@iap_16.m-v-l.de>
- References: <001701bfb107$ba318c40$ce0c310a@iap_16.m-v-l.de>
- Reply-to: agnaldo@if.ufrj.br
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    And superconductors, that have the strongest
    diamagnetism of all, may have permeability very close
    to
    zero. In some phase it is identically zero. Thats why
    magnets can float over superconductors.

    Agnaldo
    >From Rio de Janeiro-Brazil:

    > >I thought it was impossible to have a relative
    permeability < 1?
    >
    >
    > Diamagnetic materials have a relative permeability <
    1., e.g. Wismut.
    > I don't know if it's corrent in this context but it's
    not impossible. As
    > far
    > as I know there are permanent magnet materials with
    mu_r<1
    >
    > Eckart
    >
    >
    >
    >
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- References:
  - Re: [femm] Permanent Magnet Models Library.
    - From: "Eckart Nipp" <eckart.nipp@m-v-l.de>

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