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What are magnetic metals and what types are there?

There are different types of magnetic metals, but the ones that have the best magnetic attraction are ferromagnetic metals.

What are magnetic metals?

It is well known that magnets attract some metals, but not all. Some, like non-toxic metals, have certain properties that make them more magnetic than others. One metal that is strongly magnetic is iron. What are the other types of magnetic metals?

There are three main types of magnetic metals: ferromagnetic metals, paramagnetic metals, and diamagnetic metals.

que son los metales magnéticos

 

Classification of magical metals.

Ferromagnetic metals

Ferromagnetic metals attract more metals. It is also interesting to note that these materials are commonly used to make magnets. Neodymium magnets are made of neodymium, iron and boron (NdFeB).

Ferromagnetic materials can contain their magnetic field. In other words, if you rub a strong neodymium magnet against a screwdriver made of iron, the screwdriver would retain some of that magnetism. When you remove the magnet and place the screwdriver next to a magnetic material, like a paper clip, it acts like a magnet and lifts it up.

Ferromagnetic ones are, for example:

Nickel

Iron

Cobalt

 

Paramagnetic metals

Paramagnetic metals are not very magnetic compared to ferromagnetic metals. Unlike ferromagnetic materials, they do not retain magnetism as soon as a magnetic field is removed. Some examples of paramagnetic metals are:

Aluminium

Platinum

 

Diamagnetic metals

Instead of being magnetically attracted by magnets, this type of metal is generally repelled by magnetic fields. Unlike paramagnetic materials that produce a magnetic field induced in the same direction as the applied magnetic field, diamagnetic materials produce a material in the opposite direction. This causes these metals to repel magnets and, in some cases of levitation, diamagnetism is working. With this experiment you can create your own diamagnetic levitation. Some diamagnetic metals are:

Gold

Bismuth

Carbon Graphite

 

  Which metal is best suited for a particularly strong magnet?

The strongest permanent magnets are currently made of neodymium-iron-boron alloy. Neodymium-iron-boron alloy is one of the rare earths. It was first developed in 1982 by General Motors Research Laboratories and Sumitomo Special Metals (Masato Sagawa).

The development in the two companies took place independently of each other. Since then, the alloy has been used in applications requiring a strong permanent magnetic field. For example, neodymium magnets are used in headphones and loudspeakers, DC motors such as those used in wireless tools, linear motors to control hard disk read/write heads, robotic grip arms and electric generators used, for example, in wind power plants. generate, used. Of course, there are also trivial applications, such as magnets, in toys, for magnetic fishing or as magnets for artistic purposes.

The properties of each metal affect how it reacts when exposed to strong rare earth magnets. Knowing the type of magnetism for each metal can be helpful in determining which type should be used in electrical equipment. For more information on magnetism and metals, please contact us. If you have further questions or need more information, please contact the specialists at ImagnetShop.

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