Successful synthesis of magnetic nanomaterials in the United States reduces dependence on rare earths

Recently, a research team at the Virginia Commonwealth University announced that they have synthesized a new type of magnetic material that is comparable in magnetic properties to traditional rare earth materials, which is expected to reduce the dependence on rare earth resources in industrial production.

The researcher at the Virginia Federal University's School of Physics and Humanities, Schiff Khanner, said the discovery opened up a new path for artificial new materials to catch up with traditional permanent magnet materials. Related papers were published in the latest issue of Applied Physics Letters.

It is understood that this new material consists of iron nanoparticles and magnetic cobalt and carbon nanoparticles, the size of the latter two is about 5 nanometers. Experiments have shown that this material is magnetically comparable to traditional permanent magnet materials made from rare earths. In addition, this material can store information at a high temperature of 516.85 degrees Celsius, has good heat resistance and stability, and has long-range order, and has potential application value in data storage applications.

Rare earth has the reputation of “industrial vitamins” and is now an extremely important strategic resource with extensive application value in petroleum, chemical, metallurgical and textile fields. In particular, permanent magnet materials made from rare earths are even more essential for industries such as telecommunications, electronics and automotive manufacturing. In addition, with the emergence and rapid development of the green technology market, the market for pure electric and hybrid electric vehicles, direct-drive wind turbine power systems and energy storage systems is growing, and the demand for permanent magnet materials and rare earth resources is also increasing. The problem of shortage of resources has become increasingly prominent.

According to the co-author of the paper, Virginia Federal University postdoctoral Ahmed El-Jenty, this is an important finding for addressing the shortage of rare earth resources. Professor Everett Carpenter, head of the school's nanoscience and nanotechnology program, said the new material has shown many outstanding features, some of which even surpass traditional permanent magnet materials.

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