Liquid non-linear core

Apr 16, 2009 7 Replies

I would like to experiment with using a liquid that has similar non-linear properties to solid ferrite rod. The general idea is to immerse a coil in it.



Can anyone please offer suggestions on what would be the most suitable product/material?



Neville Kingston


I'm probably totally wrong but maybe ferrofluid???

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D from BC myrealaddress(at)comic(dot)com BC, Canada Posted to usenet sci.electronics.design

/wiki/Ferrofluid

I got a sample of ferrofluid at CES. Though well sealed, what was in the vial turned to a solid. I certainly hope that was a fluke.

??? Iron compounds like nitrates or clorides?? (wild guess)

Nope! Those are paramagnetic, in fact.

They have positive relative permeability, it's just really stinking low. :)

Tim

A suspension of powdered iron in glycerine?

Good Luck! Rich

ferrofluid???

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Did you try degaussing it? ;-)

Cheers! Rich

Ferromagnetism is due to long-range order, only happens in solids, not liquids. Ferrofluids are suspensions of solid magnetic particles in a liquid. The difference will matter if high frequencies are present (the particles will rotate and dissipate energy).

Liquids can be highly paramagnetic, try liquid oxygen.

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