Kazan Federal University (KFU) used molecular beam epitaxy technology to create gradient magnetic materials, the press service of the Ministry of Education and Science of the Russian Federation reported.
Scientists have managed to grow films of palladium and iron with a continuous controlled distribution of magnetic impurity along the thickness.
Studies have shown that by setting the distribution profile in such "gradient" magnetic materials during their synthesis, it is possible to control the spectrum of standing exchange spin waves.
The main goal of the synthesis of gradient films is to study the possibility of controlling the spectrum of standing spin-wave resonances. The method of ferromagnetic resonance in various geometries and temperatures of measurements was used to excite these spin waves.
Our samples are low-temperature ferromagnets, but we have shown that it is possible to shift the concentration gradient interval of iron in palladium so that spin waves are observed even at room temperature, which is important for practical applications in magnonics that do not require cooling of components.
Scientists managed to track the picture of resonant absorption. It corresponded to a pre-set ferromagnetic profile of the films.
Earlier www1.ru reported that Kazan scientists developed reagents to prevent accidents during oil and gas production in the Arctic.
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