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Permanent Magnets: Difficult To Demagnetize
Permanent magnet is a magnet that produces its own magnetic field and once it retains magnetism, it cannot be demagnetize. Made of one of three ferromagnetic materials (iron, nickel or cobalt), it is regarded as one of the most commonly used magnet. Available in several shapes like ring magnets, rectangle and disc, out of the various magnets, Neodymium is considered as one of the best permanent magnets. These magnets produce magnetic field around themselves and they circulate around magnets in a varied manner. The size and strength of the magnet defines its magnetic field.
These magnets are further divided into four categories:
Neodymium Iron Boron- Being considered as the most expensive of all kinds of magnets, these are really strong magnets having half-inch of a diameter. These magnets are capable of lifting ferromagnetic materials of several pounds.
Samarium Cobalt magnet (SmCo)- Samarium magnets are also strong magnets which are made from rare earth magnets. Having similar properties to neodymium magnets, these magnets are difficult to demagnetize.
Ferrite or Ceramic Magnets- These are also ...
... strong magnets which are used for laboratory experiments.
Alnico Magnets- Being more expensive than ceramic magnets, alnico magnets are made from three compounds-aluminium, nickel and cobalt. These magnets are also referred as strong magnets and they are commonly used for science experiments.
Applications of Permanent Magnets
These magnets are considered as vital components in various electro mechanical machined and electronic devices. Some of the main uses of these magnets are:
1.Used in Homes- These magnets are commonly used in refrigerator door. The gasket of refrigerator, which seals the door is another item which contains thin magnetic strip.
2.Used in Auto mobiles- Many electric and hybrid vehicles use these magnets. Needless to mention, those magnets which are made from permanent magnets are expensive.
3.Used in Jewelry- Highly used in making jewelry, these magnets are used for manufacturing jewelry items like earrings, necklaces, bracelets, etc. Because these magnets keep the jewelry items clasped closed, therefore they are widely used in their manufacturing.
Some other usage of these magnets are they are used in electric motors, in magnetic recordings, in storage media devices like hard drives, etc. In order to purchase these magnets, one can look for online sources. Several wholesalers and retailers are selling permanent magnets of various strengths and sizes at affordable prices. They keep on displaying the kinds of magnets in which they deal on their websites. So, simply visit their websites and if you find magnets of your choice, place online order. Many times, online sellers offer good discount when purchases are made in bulk. So, for finding more information about these magnets, search over the internet.
Ferrite magnets are suitable for high frequency electromagnetic device. Buy Flexible Industrial magnets, Permanent magnet, Ferrite permanent magnets, Hard ferrite magnets and Gyro-magnetic ferrite online.
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