The more complex iron nitride α”-Fe 16 N 2 was first discovered in 1951; its magnetic properties were explored in the early 1970s and again in the 1990s as part of the search for new and better ...

But some metals are magnetic and some are not. The most common magnetic metal is iron ... to two paper clips as shown. On a piece of construction paper, draw a lake or a winding river (we’ll assume it ...

Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and sizes. Bar magnets and horseshoe magnets are two of the most common shapes ...