Scientists from the Far Eastern Federal University (FEFU) have developed a new method of information storage using unique nickel nanostructures that resemble jellyfish in shape.
"Nanomedusas," consisting of nanowires with a "head" and several "legs" of smaller diameter, can significantly increase the density of magnetic data recording, making storage devices more compact and energy-efficient.
The choice of nickel is due to its unique magnetic properties, which depend on the shape of the nano-objects. Researchers have discovered a number of rare effects in "nanomedusas," such as asymmetric field distribution and the formation of magnetic "corkscrews." These features allow them to be used as information carriers, which are recorded according to the principle of magnetic tracks (similar to that used in audio and video cassettes).
Unlike traditional mechanical media, "nanomedusas" provide control of magnetic domains using electric current at speeds of up to one kilometer per second, which eliminates the need for mechanical movement. One such nanostructure, about 300 nanometers in size, can hold thousands of bits of information, which significantly increases recording density and reduces energy consumption.
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