how magnets are made?

Answer 1

You have to have a ferrous metal to begin with,
that is - something with a lot of iron in it. You
can't make a magnet out of copper for example.
Then you wrap it up in a coil of wire and run a
D.C. current thru it for some length of time. If
it's a soft metal, the magnetic effect will be
temporary. In some applications this is desirable.
But if you want a permanent magnet, the metal
must be hard.

Answer 2

Magnetization of materials
Ferromagnetic materials can be magnetised in the following ways:

Placing the item in an external magnetic field will result in the item retaining some of the magnetism on removal. Vibration has been shown to increase the effect. Ferrous materials aligned with the earth's magnetic field and which are subject to vibration (e.g. frame of a conveyor) have been shown to acquire significant residual magnetism.
Placing the item in a solenoid with a direct current passing through it.
Stroking - An existing magnet is moved from one end of the item to the other repeatedly in the same direction.
Placing a steel bar in a magnetic field, then heating it to a high temperature and then finally hammering it as it cools. This can be done by laying the magnet in a North-South direction in the Earth's magnetic field. In this case, the magnet is not very strong but the effect is permanent.
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Demagnetizing materials
Permanent magnets can be demagnetized in the following ways:

Heating a magnet past its Curie point will destroy the long range ordering.
Contact through stroking one magnet with another in random fashion will demagnetize the magnet being stroked, in some cases; some materials have a very high coercive field and cannot be demagnetized with other permanent magnets.
Hammering or jarring will destroy the long range ordering within the magnet.
A magnet being placed in a solenoid which has an alternating current being passed through it will have its long range ordering disrupted, in much the same way that direct current can cause ordering.
In an electromagnet which uses a soft iron core, ceasing the flow of current will eliminate the magnetic field. However, a slight field may remain in the core material as a result of hysteresis.

Answer 3

"Ferromagnetic materials can be magnetised in the following ways:

* Placing the item in an external magnetic field will result in the item retaining some of the magnetism on removal. Vibration has been shown to increase the effect. Ferrous materials aligned with the earth's magnetic field and which are subject to vibration (e.g. frame of a conveyor) have been shown to acquire significant residual magnetism.
* Placing the item in a solenoid with a direct current passing through it.
* Stroking - An existing magnet is moved from one end of the item to the other repeatedly in the same direction.
* Placing a steel bar in a magnetic field, then heating it to a high temperature and then finally hammering it as it cools. This can be done by laying the magnet in a North-South direction in the Earth's magnetic field. In this case, the magnet is not very strong but the effect is permanent."

Answer 4

in school you learned how iron things can be magnetized by contact to a permanent magnet... but you also learned that the effect fades quickly... so how are magnets made permanently? very simple. you just make the iron- actually its not pure iron, but that is not important here- and make it REALLY hot. then you expose it to a strong magnetic field, in this case not another magnet, but an electric coil that has the same effect. the hot iron becomes magnetic and when it cools down the effect is permanent. or until you reheat it again.
that is more or less the way natural magnets come into being, heated deep under earth and exposed to the earths own magnetic field... takes longer, but works as fine.

PS: this is not really the truth. but it is as close to the truth as can be explained in this place. just keep in mind that each step of the process is more complicated than it seems, but the outcome is very much the same.

Answer 5

Permanent magnets can be produced using metals or alloys that have atoms or molecules or crystals that are already magnetics on a microscopic scale. By heating the metal hot enough the billions of tiny "magnets" are free to rotate. Subjecting them to a strong magnetic field (electromagnet or permanent magnet) will align them like compasses on earth all pointing to North. After the metal is cooled, the tiny magnets will remain aligned and act as one huge magnet, adding all their strengths together rather than fighting against each other as they did when randomly oriented. Ancient fire pits and cooled lava exhibit similar orientations of trace magnets permitting scientists to determine that the earth's pole and land masses have shifted with time. Great question.

Answer 6

magnets are made by inducing electrical variations in the metal by using the electric discahrge or by placing a heavily magnetic substance near by. try with answers.com

Answer 7

most are made using electrical current but there are rare earth magnets

Answer 8

magnets are made by magnetic materials like lodestone which attract other pieces of iron mettallic bodies

Answer 9

magnets are made by electrically charging metal to produce positive and negative ios.

Answer 10

If you go into business selling such things, you'll be a magnet magnate...