A team of scientists at Manchester University has made a real breakthrough in the field of data storage: now, chilled molecules can be used as storage devices.
As you know, the basis for the operation of most modern hard drives is magnetism. Magnetic grains ranging in size from 10 to 20 nanometers are capable of encoding 1 bit of data. By changing their polarization “north-south” or back, they take the values 1 or 0. The memory effect, in which the material stores the information obtained after the magnetic field is turned off, is called magnetic hysteresis.
However, when trying to further reduce the size of carriers, scientists have faced a serious problem. It turned out that individual molecules are not capable of magnetic hysteresis until they reach very low temperatures, on the order of -259 ° C. Researchers from Manchester solved this problem using an element of dysprosium. This metal from the group of lanthanides is capable of hysteresis at -213 ° C, due to which its molecules are much more suitable for data storage. At present, scientists want to increase the received figure even more – to -196 ° C, which will allow us to use the usual liquid nitrogen as a cooler for such a storage system.
Storing information in molecules can revolutionize the work of data centers, allowing you to store about 25 TB of data in a piece of coin -sized substance . At the same time, such a system will be more effective than the current ones.
To date, such technologies are extremely in demand. Suffice it to say that the Internet giant Google for the past three years has invested more than $ 30 billion in the construction of new giant data centers around the world.