A neodymium magnet (also known as NdFeB, NIB or Neo magnet), the most widely used[1] type of rareearth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the Nd2Fe14B tetragonal crystalline structure.[2 جودة عالية المغناطيس النيوديميوم الصمام الخفيفة ...