How can there be neodymium magnets when neodymium is paramagnetic?

Thread starter abdossamad2003
Start date May 23, 2021
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Magnets Neodymium

In summary, neodymium magnets are incredibly strong due to their strong magnetic moment, even though neodymium itself is paramagnetic. They are made from an alloy of neodymium, iron, and boron, which results in a very strong and permanent magnetic field. These magnets are made through a process called sintering and can be dangerous if not handled properly. They are considered permanent magnets but can lose some of their magnetic properties if exposed to high temperatures or strong magnetic fields in the opposite direction.

May 23, 2021

abdossamad2003

Neodymium is a paramagnetic material, so how do we have a permanent neodymium magnet?

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May 23, 2021

kuruman

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Pure neodymium may be paramagnetic but neodymium magnets are ferromagnetic alloys that contain neodymium hence the name. Have you ever wondered why a permanent magnet sticks to regular steel but not to stainless steel?

May 23, 2021

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Or why nickel is magnetic but nickles are not?

1. How can neodymium magnets be so strong if neodymium is paramagnetic?

While neodymium is indeed paramagnetic, meaning it is weakly attracted to magnetic fields, it is also a rare earth element with unique atomic properties that allow it to form strong permanent magnets. These magnets are created by aligning the atomic spins of neodymium atoms in a specific direction, creating a strong magnetic field.

2. How are neodymium magnets different from other types of magnets?

Neodymium magnets, also known as rare earth magnets, are significantly stronger than traditional magnets made from iron, nickel, or cobalt. This is due to their unique atomic structure and the strong magnetic field created by aligning the spins of neodymium atoms. They are also more resistant to demagnetization and have a higher maximum operating temperature.

3. Are neodymium magnets dangerous to handle?

While neodymium magnets are extremely strong and can cause serious injuries if mishandled, they are not inherently dangerous. However, caution should be taken when handling large or powerful magnets, as they can attract and pull objects with great force. It is also important to keep neodymium magnets away from electronic devices, as they can interfere with their functioning.

4. How are neodymium magnets used in everyday life?

Neodymium magnets have a wide range of applications in everyday life. They are commonly used in speakers, headphones, hard drives, and electric motors. They are also used in medical devices, such as MRI machines, and in various industrial and commercial applications, such as magnetic separators and lifting devices.

5. Can neodymium magnets lose their magnetism over time?

Neodymium magnets are considered permanent magnets, meaning they retain their magnetism over a long period of time. However, they can lose their magnetism if exposed to high temperatures or strong magnetic fields. To prevent demagnetization, neodymium magnets are often coated with a protective layer and should be stored in a cool, dry place away from other magnets.