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April 21 2012 7 21 /04 /April /2012 13:17

I have compiled a list of sources for the elements that are available to the amateur chemist. Samarium will be discussed here. 

 

Samarium is a rare earth metal that is more corrosion resistant than some of the earlier lanthanides. It is a divalent state, which compounds are strong reducing agents. Samarium(II) iodide is a greenish solid, while most of the trivalent compounds are yellowish or greenish as well. Samarium-cobalt magnets are the second strongest magnets, just behind NdFeB. They have a much greater heat resistance than the neodymium magnets. I tried to extract a pure sample of samarium chloride by dissolving the magnet in acetic acid, but some iron dissolved alongside the rare earths, contaminating the solution.

 

In element form: Samarium-cobalt magnets contain about 15% samarium metal. Mischmetal or ferrocerium contains about 1% samarium.

 

In compound form: No sources found.

 

Here is my sample of samarium metal. It is a complete samarium-cobalt magnet removed from a speaker. The shiny nickel plating is torn off in some areas, exposing the magnetic samarium-cobalt-misc. alloy.

 

Samarium-cobalt-magnet.JPG

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Published by LanthanumK - in Elements
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