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Samarium cobalt magnets (also known as SmCo magnets): one of the two types of rare earth magnets is a strong permanent magnet made of an alloy of samarium and cobalt. They were developed in the early 1970s. They are generally the second-strongest type of magnet made, less strong than neodymium magnets, but have higher temperature ratings.

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Download and share OpenCobalt worlds (those work with Edusim/interactive whiteboard in your classroom)

CobaltWords is a place to share and find OpenCobalt compatible models and .c3d static world templates for OpenCobalt.

Permanent magnet Alnico is an iron alloy with the addition of aluminum (Al), nickel (Ni), cobalt (Co), and a few other components that enhance magnetism in addition to iron. Alnico alloys have high coactivity and high Curie temperature. Alnico alloys are hard and brittle and cannot be cold worked, so they must be made by casting or sintering.