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Material magnetisation

  1. May 27, 2004 #1

    drag

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    Greetings !

    I was wondering if there are materials that have
    high magnetic permeability, yet aren't really ferromagnets -
    would not considrably increase the external field ?

    Alternatively, how about materials with high permeability
    that need relatively high fields to induce their own strong
    fields. For example, iron in magnetic field of a few Gauss will
    already produce a 1 T field, so how about materials that will
    need say hundreds of Gauss before they're really induced
    to Tesla scale field magnitudes ?

    Thanks a lot.

    Live long and prosper.
     
  2. jcsd
  3. May 28, 2004 #2

    drag

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    hmm... some attention ? :biggrin:
     
  4. May 28, 2004 #3

    Gokul43201

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    Could you be more specific, and restate your question in terms of B, H, M, and [tex] \mu [/tex] ?

    There appears to be an apparent contradiction in the statement of your problem, but I'm going to wait till you rewrite it.
     
    Last edited: May 28, 2004
  5. May 28, 2004 #4

    drag

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    Maybe my question was somewhat confusing.
    But it's simple really - I'm looking for a material with
    high permeability and low induced field. Or alternatively,
    high permeability and low induced field at least when the
    external field is below, say, 10^-2 T (100 Gauss).
    (Low, in this case, would be say - up to 100 times
    the external field at most.)

    Thanks. :smile:
     
  6. May 29, 2004 #5

    drag

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    Ah... never mind, found the numbers on one type of
    Mumetal, something like 1 to 300 induction at a few Gauss,
    fits my secret weapon plans... :biggrin:
     
  7. May 29, 2004 #6
    Hahaha,
    Will anyone be spared ?
     
  8. May 30, 2004 #7

    drag

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    Sure, those who pay up-front... :biggrin:

    btw, nice to have you back BH, haven't seen you around
    for some time now. :smile:
     
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