Russian chemists discovered that cobalt ferrite can interact with terahertz radio waves. This was reported by the press service of Moscow State University.
There is a regularity in radio communication: the higher the radiation frequency, the more information can be transmitted per unit time, all other things being equal. That’s why every new generation mobile network (3G, 4G, 5G) uses a higher radiation frequency. According to experts, promising 6G communication will have to operate at a frequency of 100 GHz, which will allow data transfers about 20 times faster than standard Wi-Fi. But to work with such frequencies requires special materials that both emit and receive such waves.
Materials suitable for effective interaction with high-frequency electromagnetic radiation must be able to resonate with it. The most reasonable way to convert radiation into an analytical signal, for example an electric current, is considered to be the electron resonance mechanism in a substance. Therefore, it is extremely promising to use materials where high electron spin rate is possible.
Now Evgeny Gorbachev and his colleagues have discovered that cobalt ferrite can be used as such a material. It was known to chemists for a long time, but its properties were not fully known. Now scientists have demonstrated that cooled cobalt ferrite has the ability to resonate frequencies up to 350 GHz without the application of an external magnetic field, which is a record.
The authors suggest that in the future it will be possible to create radio transceivers for 6G communication using cobalt ferrite or related materials.
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