Have you ever wondered how switchable magnets work? Not electromagnets, but those permanent magnet fixtures like the ones that hold dial indicators to machine tools, or the big, powerful chucks ...

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 ...

Luckily, there’s more than one way to make a magnet, and it may soon be possible to build permanent magnets as strong as neodymium magnets, but without any rare earth metals. In fact ...

It revolutionized the low-cost mass production of permanent magnets and enabled smaller motors and hard disk drives to be produced, thus playing a vital role in shaping modern society. Even today ...

More information: Youngkyun Jung et al, Synergistic Effect of Core/Shell-Structured Composite Fibers: Efficient Recovery of Rare-Earth Elements from Spent NdFeB Permanent Magnets, Advanced Fiber ...