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Hi guys
Think you'll fin all you want and more via Hitachi
magnet spec sheets without duplicating their work! Their range is
extensive.
Also if anybody is interested in full 3D
Electromagnetic work I have Cosmos EMS, which is full 3D (though my skills
knowledge are definitely far beyond Dr. Meeker's)
Jeremy
----- Original Message -----
Sent: Friday, April 02, 2004 3:32
PM
Subject: RE: [FEMM] Magnetization
curves
Hello
NdFeB has linear magnetic characteristic with relative
permeability around
1,05. Hc depends on used material.
Producers
provides B and Hc and you can calculate relative permeability
from
that.
This is for cold magnets, with temperature the
characteristic change, but I
calculate with linear characteristic reduced
about 10% of the Hc.
B reduces about 12% per 100C for
NdFeB.
Take a look for example:
http://www.vacuumschmelze.de/dbw/public_vac/Homepage_en/$pages/Dauermagnete_
startold
Jiri
Vecerka
> [mailto:femm-bounces@xxxxxxxxxxxxxxxxxxxxxx]On Behalf
Of
> agnaldo@xxxxxxxxxx
>
Sent: Friday, April 02, 2004 6:20 AM
> Subject: [FEMM] Magnetization
curves
>
> David, thanks for your answer about the vector potentia
XY plot,
> it was very
> usefull to me.
> Now I ask, once
more, the FEMM people colaboration about another
> problem; does
>
anybody has (or knows how to find)B(H) cuerves for NdFeB and SmCo5?
The
> caracteristics that are im FEMM data bank doesn´t agree with
my
> experimental
>
results.
>
Thanks in
advance.
>
Agnaldo
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