The amount of magnetic energy packed into these tiny ... This method uses ribbons of an iron-copper-boron alloy and exposes it to an atmosphere of ammonia and hydrogen at 550°C for 28 hours ...

"However, the materials and technology required to create traditional copper-based wire superconductors ... with larger iron-based crystals within the magnet structure. The structure of the ...

A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and ...

The solder will bubble away the enamel and tin the copper underneath in the ... melting a small amount of solder on the iron, then push the tip of the magnet wire a small distance into the molten ...