AN IMPRESSION OF THE INTERNATIONAL PERMANENT MAGNET MARKET
“Concise Analysis of the International Permanent Magnet Market – Trends & Forecast To 2018″ report is already out. According to it, permanent magnet market is currently experiencing high growth, due to rising demand for increased electrification in all walks of like and due to the need for better efficiency.
Permanent magnets are objects made of material that’s magnetized and has its own magnetic field. Like the name implies, it is “permanent” magnet with a magnetic field and displays magnetic behavior always. However their uses are limited, as against electro magnets, due to the limited magnetic power. Until electromagnets were discovered, permanent magnets were the only magnets available to men.
The magnetic behavior of a material depends on its structure, particularly its electron configuration, for the reasons mentioned above, and also on the temperature. At high temperatures, random thermal motion makes it more difficult for the electrons to maintain alignment.
Permanent magnets can be made from magnetite, naturally occurring mineral that’s highly magnetic, or a synthetic magnetic substance called neodymium. The strength of permanent magnets will depend on the material used. However, a permanent magnet can lose magnetic properties, like when it is heated to its maximum temperature. Then, the magnetic property will be lost and can be regained only by re-magnetizing. Even so, it is preferred over electromagnets as they don’t need constant electric supply for maintaining magnetic field. As a result, permanent magnets are sought after in wind energy and automotive sectors. It is used for electric wheels, power steering, hybrid wheels, etc. Wind turbines are another area where permanent magnets are popular.
Some organisms can detect magnetic fields, a phenomenon known as magnetoception. In addition to detection, biomagnetic phenomena are utilized by organisms in a number of ways. For instance, chitons, a type of marine mollusk, produce magnetite to harden their teeth, and even humans produce magnetite in bodily tissue. Magnetobiology studies magnetic fields as a medical treatment; fields naturally produced by an organism are known as biomagnetism.
Now, China rules the roost of rare earth magnets, which are composed of different rare earth elements and ferrite. NdFeB permanent magnet is used widely, thanks to the infinite applications and advantages. Today, China retains the monopoly of rare earth minerals that are used to create rare earth magnets. They have a huge reserve of 23% of dysprosium and neodymium. Chinese government is taking measures to ensure they retain their monopoly as the best supplier of rare earth reserves, but without hampering its requirement.
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves.
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