Methods to magnetise and de-magnetise by Himanshu Jain https://padlet.com/himanshujain3/magnetism Room No. 1 - Different Ways to Magnetise a magnetic material Room No. 2 - Different Ways to De-Magnetise a magnetic material en-us 2021-08-02 08:03:55 UTC 2025-11-19 10:45:17 UTC hello@padlet.com Ferromagnetic Materials -Parth parthrupani https://padlet.com/himanshujain3/magnetism/wish/1666533655 A ferromagnetic material is a material that can either be attracted towards a magnet, or it can be turned into a magnet. A ferromagnetic material’s atoms face in different directions, however, when it is turned into a magnet, all the atoms will face one direction. The ferromagnetic material is converted into a magnet when you take a permanent magnet (e.g. bar magnet) and start rotating it around the ferromagnetic material. You can make a permanent bar magnet by taking a ferromagnetic material, and rotating a bar magnet around it while touching the sides. Repeating this process for a while will make the ferromagnetic material into a bar magnet.  
In a magnetised ferromagnetic material, all the atoms align and face the same direction. 

https://www.britannica.com/science/ferromagnetism



]]> 2021-08-02 08:06:34 UTC https://padlet.com/himanshujain3/magnetism/wish/1666533655 Single touch method ishikachaturvedi https://padlet.com/himanshujain3/magnetism/wish/1666534087
  • Single-touch method — A magnet is rubbed along the magnetic substance from one end to another.
    • https://www.toppr.com/ask/question/list-four-methods-of-magnetizing-a-magnetic-substance/


    ]]>     2021-08-02 08:07:14 UTC https://padlet.com/himanshujain3/magnetism/wish/1666534087     double touch method sanaa_agarwal https://padlet.com/himanshujain3/magnetism/wish/1666534213 This is a method of magnetising. opposite poles of two magnets are placed next to each other at the centre of the magnetic substance and rubbed in opposite direction along it.

    -sanaa]]>     2021-08-02 08:07:27 UTC https://padlet.com/himanshujain3/magnetism/wish/1666534213     Demagnetize a Magnet by Heating https://padlet.com/himanshujain3/magnetism/wish/1666534405 Heating a magnet past the temperature of the Curie point the energy generated will free the magnetic poles thus changing their ordered orientation.

    Curie point- 'temperature at which certain magnetic materials undergo a sharp change in their magnetic properties.' 

    One way to heat the magnet would be to place it in boiling water.
    -Tashvi ]]>     2021-08-02 08:07:47 UTC https://padlet.com/himanshujain3/magnetism/wish/1666534405     electric current nysa_turakhia https://padlet.com/himanshujain3/magnetism/wish/1666534987 (magnetising magnetic materials) An electromagnet is a magnet that is powered by electric currents. It's a temporary magnet that stops acting like one once the current is turned off. When certain materials, such as steel and special alloys, are placed in a coil and a very strong current is passed through it, electromagnets can become permanent magnets.]]> 2021-08-02 08:08:40 UTC https://padlet.com/himanshujain3/magnetism/wish/1666534987 Induction https://padlet.com/himanshujain3/magnetism/wish/1666535163 It is a method to make temporary magnets under the influence of a magnetizing force. The magnetic properties disappear when the influence of the magnetizing force is removed.]]> 2021-08-02 08:08:56 UTC https://padlet.com/himanshujain3/magnetism/wish/1666535163 Hammering the magnet: mehekalimchandani https://padlet.com/himanshujain3/magnetism/wish/1666535642 -Mehek

    ~Hammering the magnet several times can decrease the magnetic force hence demagnetising the magnet. We can also heat the magnet to an extreme temperature or drop it on the floor several times to get the same result.]]>     2021-08-02 08:09:39 UTC https://padlet.com/himanshujain3/magnetism/wish/1666535642     Hammer and electric https://padlet.com/himanshujain3/magnetism/wish/1666536549 A hammer may also be used to demagnetize a magnet by striking the ends of the magnet with it. This will change the order of the magnet. A good technique to attain this goal is to hit a magnet with an item in general, applying force.

    An alternating current field may be used to change the order of the magnetic poles in the same way. You may achieve this by placing the magnet into a solenoid, which is a loop of coiled copper wire enclosing a metal core that is coupled to an electric current and connected to an alternating current circuit.

    Citation- IMA. 2021. How can a magnet be demagnetized? - Magnets Blog - IMA. [online] Available at: <https://www.imamagnets.com/en/blog/how-can-magnet-be-demagnetized/> [Accessed August 2021]. 
    - Ananya ]]>     2021-08-02 08:11:06 UTC https://padlet.com/himanshujain3/magnetism/wish/1666536549     Magnet losing its properties over time https://padlet.com/himanshujain3/magnetism/wish/1666540851 A magnet's characteristics can deteriorate with time, mostly as a result of being subjected to high temperatures and electromagnetic fields around the magnet, which reduces the magnetism level. The process is quite slow; it takes about 700 years for a modern samarium-cobalt magnet to lose half its strength; however, heating or dropping a magnet may accelerate this process.
    -krrish

    Citation-

    1)Gupta, Vandana. “Do Magnets Wear out?” BBC Science Focus Magazine, www.sciencefocus.com/science/do-magnets-wear-out/.

    2)“Do Magnets Weaken over Time? Get Creative DIY Projects with Magnets.” Magnetpartner.com, magnetpartner.com/blog/magnets-weaken-time. 

    ]]>     2021-08-02 08:18:02 UTC https://padlet.com/himanshujain3/magnetism/wish/1666540851