Magnets are available in different sizes as well as serve various purposes, from home to industrial uses. But, there are mainly three types of magnets, which are extremely popular, permanent, temporary and electromagnets. But, permanent magnets are the ones the most of people are familiar with, as well as they are considered permanent because they keep their level of magnetism once they are magnetized. The permanent magnet is an object made from a material that is magnetized as well as it produces its own persistent magnetic field. Besides, these magnets can be shaped in almost every shape and size. Additionally, when you are searching for qualities of a good permanent magnet you want to make sure that the magnet is stable against the impasses that can demagnetize it.
There are different kinds of permanent magnets and each one has varied properties and characteristics. In addition, they may be differentiated in proportion to their strength, the change in strength that takes place because of temperature fluctuation, the ease with which they get magnetized and so on. A variety of types of permanent magnets are:
Types of permanent magnets, including:
- Samarium-cobalt
- Alnico
- Neodymium
- Ceramic or ferrite
These magnets can be created in about every shape that you can think of. But, the perfect ideal magnet should be strong magnetic field as well as low mass. In addition, good permanent magnets must be resistant to the influences of the particles that demagnetize it. Properties that differentiate these magnets are:
- How strong the magnet is
- How the magnet strength changes depending on the temperature
- How easily the magnet can be demagnetized
There are many uses of permanent magnets on a regular day. For example, medical fields utilize magnets, and several electronic appliances o need to have permanent magnets as well for the proper functioning of the device. In addition, speakers of the audio system need these devices. Remember, magnets are extremely important part of the speakers as it changes signals into vibrations that carries sound. Besides, generators and motors are another big area of the use of magnets.
Remember, the magnet is not made-up, but natural magnetite first discovered as well as the use of magnets should be Chinese. Thus, the compass (an instrument that containing a magnetized pointer which gives you an idea about the direction of magnetic north and bearings from it)’ is one of the 4 greatest discoveries of the people of China. As for the element that is cobalt, nickel, iron and many more with the particular structure of atoms, atomic itself as well as the magnetic moment.
