A permanent magnet has most of its domains arranged it the same direction.
domains
True
To Earth's Magnetic Pole in the Northern Hemisphere
The magnetic domains of an unmagnetized material will be pointing in random directions, which is why it is appearing to me unmagnetized. In a magnetized material, they move from north to south.
In an unmagnetised piece of iron, these magnetic domains are arranged randomly and point in lots of different directions - they cancel each other out. In a magnetised piece of iron, all these domains point in the same direction. This makes one end of the magnet act as a north pole and the other end act as a south pole. The better the domains are aligned, the stronger the magnet. Bye bye!
It is called Magnetite.
domains
domains
domains
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POINTED in the same direction
True
To Earth's Magnetic Pole in the Northern Hemisphere
It lines up in the same direction :)
Line up in the same direction
The magnetic domains of an unmagnetized material will be pointing in random directions, which is why it is appearing to me unmagnetized. In a magnetized material, they move from north to south.
The iron automatically divides into domains separately. It does not exist in a state when magnetization occurs in the same direction, in the entire material. This is to minimize its internal energy.