Material magnetisation

  • Thread starter drag
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  • #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.
 

Answers and Replies

  • #2
drag
Science Advisor
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hmm... some attention ? :biggrin:
 
  • #3
Gokul43201
Staff Emeritus
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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:
  • #4
drag
Science Advisor
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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:
 
  • #5
drag
Science Advisor
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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:
 
  • #6
BoulderHead
Hahaha,
Will anyone be spared ?
 
  • #7
drag
Science Advisor
1,096
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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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