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Inorganic Compound Chemicals

Ironic materials are materials that have magnetic properties similar to those of iron.  They can become permanently magnetized.  Examples of Ironic materials are nickel, cobalt, and alnico, an aluminum-nickel-cobalt alloy. 

Magnetic fields are produced by currents.  Permanent magnets are the result of "magnetization currents" flowing inside the material.  The magnetization currents in materials are a consequence of the electron's orbital motion and spin.  Electrons have an intrinsic property, called spin.  Because they have spin, they have a magnetic moment, similar to a small current loop.  Electrons by themselves act like tiny magnets.  If you pick an axis, an electron's magnetic moment can either be parallel or anti-parallel to this axis.  In an atom the electrons are arranged in orbitals.  An orbiting electron can have an additional magnetic moment similar to the magnetic moment of a tiny current loop.  If all the magnetic moments of the electrons in an atom do not completely cancel out, then the atom will act like a tiny magnet.

Applications of Megnetic Materials

Magnetic materials play an important role in the advancement of industrial and scientific growth. They are invariably used in power generation and transmission, electronic appliances, analogue and digital data storage, medical appliances like magnetic resonance imaging (MRI), magnetic therapy and drug delivery, sensors and actuators, scientific instruments, etc.


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2) Avoid damp and high temperature.
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