In 1982, two researchers working independently of each other developed the neodymium–iron–boron magnet, which was stronger than any known magnet. It revolutionized the low-cost mass production ...

Alternatively, iron oxide can be mixed with ammonium nitrate ... The resulting α”-Fe 16 N 2 is then separated by magnet and can be formed into solid shapes. This method seems like it would ...

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 ...

Niron Magnetic’s latest advance, the Clean Earth Magnet, promises to settle the ... Weaker hard ferrite (iron-oxide) ...

Converting a magnet to a non-magnet is called demagnetisation. Magnets are made from magnetic metals – iron, nickel and cobalt. These are the only pure metals that can be turned into a magnet.