magnetite
Hey guys, I have some experience with Magnetite,black sand, Fe304, Pure Fe304, the deco stuff, just about all versions. If you get the right stuff it has some very good characteristics, It is an AMORPHOUS, which basically means that is magnetic but not conductive, so there are no eddy currents and very low losses. It can switch a very high freq. well into the Mhz.
and works well at low freq. It is not as permeable as ferrite or iron, but it much better than air. It can molded into any size or shape, it is very cheap and easy to find. The stuff you want is Prospecting black sand that has already been "pulled" for gold. They separate the gold from the sand with magnet tools, so the left over sand is purely magnetic with small traces of other magnetic material. You can get this from Ebay, DONT confuse with sand with gold that you buy to prospect yourself.
Nolan
Originally posted by MonsieurM
View Post
and works well at low freq. It is not as permeable as ferrite or iron, but it much better than air. It can molded into any size or shape, it is very cheap and easy to find. The stuff you want is Prospecting black sand that has already been "pulled" for gold. They separate the gold from the sand with magnet tools, so the left over sand is purely magnetic with small traces of other magnetic material. You can get this from Ebay, DONT confuse with sand with gold that you buy to prospect yourself.
Nolan
Comment