Rare earth magnets are made from certain alloys of metals, which produce a very strong permanent magnet. These days there are quite easy to find, with sets available on Amazon.com for under $10.
they're stronger
http://magnitrf.ru/
Rare earth magnets were developed in 1966 by K.J. Strnat and G. Hoffer when they discovered an alloy of cobal and yttrium in a laboratory. There are several different types of rare earth metals.
Rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields. You can make substitutions but you won't get the same strength of magnetism.
Rare earth magnets are very powerful magnets which have no iron. Cobalt and nickel are also magnetic.
There is nothing inside magnets. The solid metal has magnetic properties due to it's molecular make up. Magnets are commonly made of iron, but there are more powerful magnets, made from alloys of rare earth metals. The magnetic fiels surround the whole magnetic object.
The rare earth metal neodymium melts at 1024 °C, or 1875 °F, or 1297 K. Use the link below to learn more about the metal that, when alloyed with iron and a hint of boron, makes the strongest known permanent magnets.
Most magnetic alloys are based on one or more of the following:ironnickelcobaltHigh field strength modern alloys also contain rare earth metals.
Neodymium magnets are rare-earth magnets that can most commonly be purchased online via Amazon or Ebay. They may also be found at stores specializing in providing for the engineering industry, or specialize in magnets in general.
Iron, Nickel, and Cobalt. Also some of the rare earth metals, like Samarium
Electro Magnets are the controllable type of magnet used. It may be possible but not practical to use rare earth magnets.
what you do is get the two magnets on the edge of a table slightly hang the one you want separated off the edge then get a piece of square wood and puss down and that should do it!