A magnet is an important part of devices like smartphones, automobiles, and many more. Most of these magnets are made using rare-earth materials, which are expensive and scarce on the market. Also, mining these materials is dangerous and could put miners’ health at risk. But there are hardly any substitutes for these metals, making scientists rely on them heavily. However, some scientists have uncovered what could be a potential solution. Want to find out what this could be? Keep reading.
Scientists have discovered a new magnet that could overthrow rare-earth elements
Scientists at Georgetown University have discovered a powerful magnet. This is a huge milestone for the technology world. Until now, most of the magnets used in machines like electric cars and wind turbines require a special type of metal called rare-earth elements. However, these elements are not easy to come by, and mining them can cause deleterious effects to the environment. But with the discovery of this new special magnet, there is less need to mine these metals, reducing the danger the environment is exposed to.
What makes up this new magnet? It is made from a mixture of some common metals like iron, cobalt, nickel, manganese, and boron. With this mixture, the magnet is keen to stay magnetized in one direction, which is a special feature important for advanced technology. And because it uses readily available materials, this discovery will lead to the production of cheaper and more efficient products.
They added boron to high-entropy alloys to get their preferred structure
The scientists worked on special mixtures known as “high-entropy alloys”. This refers to when five or more elements are mixed in almost equal amounts. With this mixture, it has become easier to discover new materials. However, studies on these types of alloys have shown chemically poorly-arranged structures, which isn’t good enough for making strong magnetic anisotropy.
To solve this problem, the team introduced boron to the mix. When boron was used, they noticed that the originally poorly-structured atoms began to take a good shape and symmetry. Then, they were able to use boron to craft a new material, which is crystalline with tetragonal symmetry. The technique used for this structure allowed them to make their desired material. One of the scientists, Beeson, was able to produce high-entropy borides using a sputtering method, where atoms of target materials mix when they are collected on a heated substrate, similar to this ITER giant fusion reactor in Southern France. With this method, they could test about 50 different versions of this magnet with different compositions.
There were some lessons to pick up from this laboratory experiment
- By creating a magnet of this type with cheap metals, the team proved it was possible to create high-performance magnets without scarce elements.
- By using the combinatorial co-sputtering method, the team realized they could make the magnet move in a preferred direction.
- The newly discovered magnets showed strong anisotropy similar to that of the rare-earth magnets.
Why this experiment will impact the technology world in the future
This discovery is the start of something good for the tech industry. It serves as a blueprint for the production of powerful magnets. By using boron to arrange a mixture of metals into a specified structure, scientists will no longer see the need for mining rare metals. This experiment has successfully solved the problem anisotropy needed for advanced technology. This has gone beyond just creating new magnets – it’s proof that ordered high-entropy materials have huge potential and could solve a lot of problems in the future, especially problems due to rare earth restrictions.
This experiment has solved a huge problem in the tech world. Scientists no longer have to do a hard search for rare-earth elements when they can use cheap metals to make the magnet they need to power their devices.
