Neodymium magnets are strong permanent magnets. They belong to the rare-earth magnet family. They are commonly referred to as NdFeB magnets or NIB, because they are composed mainly of Neodymium (ND), Iron (Fe) and Boron (B).
Neodymium magnets are graded according to their magnetic value and resistance to temperature. These magnets have a wide variety of uses and their performance depends on their grades and properties.
Neodymium magnets are cost-effective and highly efficient, compared to other rare-earth magnets such as Samarium Cobalt (“SmCo”). They also have higher remanence, coercivity, and energy product than other types of magnets.
Temperature also has a huge effect on the magnetic properties of neodymium magnets. Generally, they operate better at lower temperatures. When temperatures rise, they usually lose some of their magnetic properties. Therefore, it’s important to know the maximum operating temperature of each grade of magnet.
Neodymium magnets are said to have the best magnetic performance among all permanent magnetic materials when the temperature is below 150 degrees Celsius. Once the temperature goes above 150 degrees Celsius, their magnetic strength starts getting lower.
Interesting Facts About Neodymium Magnets
Here’s a few fun facts about neodymium magnets:
- The elements neodymium and praseodymium were both discovered by the chemist Baron Carl Auer von Welsbach in 1885.
- Its name comes from the Greek words neos didumous, which mean “new twin.”
- Since iron oxidizes quickly, neodymium magnets are often coated to prevent rust from accumulating.
- Neodymium magnets are the strongest magnets in the entire world.
Uses of Neodymium Magnets
Neodymium magnets are the most widely used rare-earth magnets. Most people prefer them over artificial magnets because their benefits are enjoyable over a long period of time. Furthermore, they are safe for use. There are no known serious health hazards on children and adults.
Below are just some of the many uses of Neodymium Magnets.
- Many people use neodymium magnets for therapeutic purposes because of their ability to help alleviate symptoms and relieve pain caused by various health problems like arthritis.
- They are used in MRI scanning machines found in hospitals. They are also sold as medical devices to wear as shoe insertions, blankets and bracelets. Based on research, neodymium magnets can stabilize iron content and hemoglobin content in blood.
- They are often used as oil filters because they can effectively separate iron fillings and other metal chips from oil.
- They can be used to hold things in place. In fact, neodymium magnets are often used in galleries and exhibitions to hang artwork.
- They can be used for making clip on earrings and jewelry clasps.
- Neodymium magnets can be used for alarms, switches, and security systems.
- They can also be used for building metal detectors.
- They can also be used for model making, arts and crafts, and home-improvement.
- They are also used for cleaning washing machines, refrigerators, and even fish tanks.
- When it comes to the entertainment industry, neodymium magnets are typically used in audio equipments such as microphones, headphones, and loudspeakers.
- They are widely used in the hard drives of computers, in telephonic applications, television, video applications, chip detectors.
- They are used in the manufacturing of electric vehicles, wind generators, and high performance motors
- NASA uses neodymium magnets for maintaining muscle tone of astronauts during space flights.
- Students of advanced Physics use neodymium magnets for experimentation and research purposes.
- They can also be found in magnetic toys for kids and adults.