This is How The First Hard Disk Drive Looked Like
Scientists unveil technology for a more efficient hard drive made from a combination of light-sensitive and ferromagnetic materials.
The demand for hard drives is growing rapidly as the number and size of files processed by users is constantly increasing, and more advanced software is being developed. Despite the fact that modern long-term data storage devices have a long lifespan and a fairly low price, they need to increase speed and capacity..
A team of physicists from the Federal Ecole Polytechnique Lausanne has developed a technology for reversible light-induced recording of magnetic bits. To do this, they used «sandwiches» made of light-sensitive (MAPbI3) and ferromagnetic (LSMO) materials. On hit light onto the perovskite coating, it transfers charged particles to the LSMO layer and reduces its magnetism.
The technology is still experimental, but scientists argue that it will form the basis for next-generation storage devices, as it allows to create systems with higher capacity and lower power consumption. Such magneto-optical hard drives do not require special operating conditions and operate at room temperature..
Previously, researchers also found that light can increase the speed of hard drives by 1000 times.
text: Ilya Bauer, photo: EPFL