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A new chemical element with magnetic properties

07.06.2018

The discovery, made experimentally by researchers at the University of Minnesota, demonstrates that the chemical element ruthenium (Ru) is the fourth chemical element with unique magnetic properties at room temperature. Until recently, only three stable magnetic elements were known to people, iron (Fe), cobalt (Co), nickel (Ni) and, in part, gadolinium (Gd), which loses its magnetic properties at temperatures above 8 degrees Celsius. The discovery of a new magnetic material may lead to the development of new types of sensors, storage devices, information processing and a host of other electronic and electromechanical devices.

This discovery is based on some theoretical predictions, for the implementation of which scientists from Minnesota have developed a method of "growing" ruthenium crystals with a quadrangular lattice shape, and not the hexagonal one that this element has in its natural form. And it is this rectangular form of ruthenium, formed as a thin film, that exhibits pronounced ferromagnetic properties at room temperature.

The researchers believe that with their discovery they opened the door to the direction of fundamental research on the magnetic properties of ruthenium. Ruthenium is particularly interesting because it is chemically inert, it is very resistant to oxidation. In addition, its magnetic properties must have high thermal stability, which makes this material a suitable candidate for use in the next generation of magnetic recording devices. And right now, scientists are researching this unique property of ruthenium.

In addition to traditional technologies that use the magnetic properties of materials, the emergence of a new magnetic material can play an important role in the further development of a number of new areas, such as spintronics. This will be favored by the fact that the technologies for growing thin films and creating nanostructures have already reached a level that allows the production of materials with unique properties that the same materials of natural origin do not possess.

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