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Which Is The Best Procedure To Make A Permanent Magnet?

In order to understand the procedures that are involved to make a permanent magnet, it is important to understand what magnets are, permanent magnets and their nature. We will start step by step and will focus on the topic simultaneously.

What Is A Permanent Magnet?

A magnet is a material that generates its own persistent magnetic field and does not depend on an outside energy source to produce it, which is why it's often referred to as a permanent magnet. That field can be reversed by placing the magnet in an external strong magnetic field.

A permanent magnet is always magnetic and has certain temperature conditions that it works on. We will discuss all the details and will discuss the best methods to create a magnet.

Permanent magnets come in many types, including ceramic, alnico, samarium-cobalt and neodymium. They can be classified as rare earth magnets since they contain several different materials. Some of these rare earth magnets have amazing properties — like the ability to hold several times their own weight, or even lift up cars! They're incredibly strong for their size.

Types of Magnets:

Classification of magnet has two main parent categories: There are two types of magnets — manmade and natural. Man Made magnets are magnetized metal, like the ones inside your computer, and were made by humans. Natural magnets are found in nature, like the lodestone that attracts metal for compasses.

Man-made magnets are more complex — they can be designed to hold up to 200 times their weight, which is pretty cool!

Magnets can be made from a variety of naturally occurring elements, including iron, cobalt, nickel and their alloys. However, the strongest magnets are made from compounds of rare-earth elements such as neodymium and samarium.

Two Most Common Ways to Create a Magnet:

While many types of magnet are made in a factory, there are two ways to create permanent magnets. The first is an electromagnet — this uses electricity from a battery or power supply to produce the effect. The second is through the use of magnetism.

We will discuss both the procedures, however, electromagnetic magnetism is costly at big productions and mainly done in industries, that’s because this procedure is fast. The other type requires a powerful magnet to magnetize a metal to magnet.

Magnet Made From Electricity:

An electromagnet uses electricity to produce a magnetic field. Electromagnets are different from permanent magnets — they only exert their magnetic force while they're being energized by an electric current. Electromagnets are used in many devices and machines that we use on an everyday basis, but are most commonly seen in loudspeakers, motors, and generators.

An electromagnet uses electricity from a battery or power supply to produce the magnetic field that attracts and holds ferrous metal objects. It's a type of magnet that is made by wrapping insulated electric wire around a soft iron core that's shaped like a donut or D-ring. The level of magnetic force depends on the amount of electrical current that flows through the wire, the number of turns in the coil, and the strength of iron used for the core. Electromagnets are designed to use electricity to create a magnetic field, which can be stronger than a permanent magnet. Electromagnets have two poles — the North Pole and the South Pole. Two like poles repel each other, and unlike poles attract.

Magnet Made From Magnetism:

Magnetic materials are created through an effect called magnetization, which is the alignment of a material's atoms. So when you expose a non-magnetic material to an external magnetic field (by rubbing it against a magnet, for example), the electrons in the material become aligned. This makes them respond to their own magnetic field, which causes the material to repel the original magnet and become magnetized.

Some magnets stay magnetic forever. And that’s why it is called a permanent magnet. They’re the kind of magnet you want for a wide variety of jobs. Some magnets only stay magnetic when in the presence of other magnetic fields, like from a permanent magnet. These magnets are called soft magnets, and they’re best for certain kinds of jobs.

 

Effect of Temperature on a Permanent Magnet:

At room temperature, a magnet is composed of many magnetic domains. When heated to its Curie temperature, these domains lose their alignment. Since there are now no longer any magnetic domains pointing in the same direction, the object becomes non-magnetic. When the object’s temperature is returned to room temperature, it can be magnetized again in the same way as outlined above.

 

Note: The Curie temperature is when any permanent magnet loses its magnetism. Named for the French physicist Pierre Curie, this critical temperature is based on the magnetic moment of iron atoms and the spin magnetic moment of electrons. The Curie temperature depends on the chemical composition and increases with any impurities.

In short: Permanently magnetized materials such as iron and nickel lose their magnetization when heated past what is called the Curie temperature. Above the Curie temperature, the material can no longer align in a magnetic field; this makes it difficult to magnetize above this point.

 

Conclusion:

So in this blog we deeply discussed and understood the top two most used methods to create a magnet, however to create a permanent magnet (a material that never loses the magnetism is known as a permanent magnet, under certain conditions). Electromagnetism is a process to turn a material into a magnetism under the influence of electricity. On the other hand, keeping a magnetic material under influence of a non-magnetic material to make it magnetic is a permanent magnet process.

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