Liquid non-linear core

[Neville Kingston]

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

 

[[email protected]]

I'm probably totally wrong but maybe ferrofluid???http://en.wikipedia.org/wiki/Ferrofluid

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

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.

 

[Tim Williams]

??? 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

 

[Rich Grise]

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?

A suspension of powdered iron in glycerine?

Good Luck!
Rich

 

[Rich Grise]

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.

Did you try degaussing it? ;-)

Cheers!
Rich

 

[whit3rd]

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.

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.