中文 | English | 한국의 | Deutsch
News
Industry News
Six times faster! Magnetic material refreshes ultra fast memory record: switching in trillionth of a second
Update Time : 2021-05-28 View : 1983
Researchers at the Research Center for adaptive nanostructures and nanodevices (Crann) and the school of physics at Trinity College Dublin recently announced that a magnetic material developed by the center demonstrates the fastest ever magnetic "switch" (the process of "writing" information to magnetic memory).
The team used the femtosecond laser system of the crank photonics research laboratory to switch within a trillionth of a second (1 picosecond) and then switch the magnetic direction of the material again, six times faster than the previous record and 100 times faster than the clock speed of a personal computer.
This discovery indicates that this material has the potential to develop a new generation of high-speed computers and data storage systems.
The researchers achieved unprecedented switching speeds in an alloy called MRG, which the team first synthesized with manganese, ruthenium and gallium in 2014. In the experiment, the team used a red laser to irradiate the MRG film, providing megawatts of energy in less than a billionth of a second.
Heat conduction changes the magnetic orientation of MRF. It takes a very fast tenth of a picosecond (1ps = trillionth of a second) to achieve the first change. But, more importantly, the team found that they could change direction again after 10 trillionths of a second. This is the fastest change in the direction of the magnet observed so far.
Their results were published in physical review letters this week.
Given the importance of magnetic materials in this industry, this discovery may open up new avenues for Innovative Computing and information technology. Magnetic materials, hidden in many of our electronic devices, as well as large data centers in the Internet Center, read and store data. The current information explosion produces more data and consumes more energy than ever before. Looking for new energy efficient methods to process data and matching materials is a global research hotspot.
The key to the success of the Trinity College Dublin team is that they can achieve ultra fast conversion without any magnetic field. Traditional magnets switch to another magnet, which costs energy and time. The switch of MRG is realized by thermal pulse, which makes use of the unique interaction between material and light.
Researchers Jean besbas and Karsten rode discussed one of the research directions:
"Magnetic materials are inherently capable of memory for logic. So far, switching from one "logic 0" state to another "logic 1" state has been a problem of too much energy consumption and too slow speed. Our research shows that we can switch MRG from one state to another in 0.1 picosecond, and the key is that the second "switch" can only take place after 10 picosecond, and the corresponding operating frequency is about 100 GHz - faster than any state previously observed.
"This discovery highlights the special ability of our MRG to effectively couple light and spin, so that we can use light to control magnetism, as well as to control light and magnetism on time scales that have not been achieved so far."
"This demonstration will lead to new device concepts based on optics and magnetism, which will benefit from greatly improved speed and energy efficiency, and is expected to eventually lead to a single general-purpose device combining memory and logic functions." It's a huge challenge, but we've shown a material that could make it possible, and we hope to continue this research. "

Copyright © 2024 FanMei Strategic Metal Resources Ltd. Shenzhen record / license number: ICP No. 14030609