摘要
In spintronic applications,there is a constant demand for lower power consumption,high densities,and fast writing speed of data storage.All-optical switching(AOS)is a technique that uses laser pulses to switch the magnetic state of a recording medium without any external devices,offering unsurpassed recording rates and a simple structure.Despite extensive research on the mechanism of AOS,low energy consumption and fast magnetization reversing remain challenging engineering questions.In this paper,we propose a newly designed cavity-enhanced AOS in Gd Co alloy,which promotes optical absorption by twofold,leading to a 50%reduction in energy consumption.Additionally,the time-resolved measurement shows that the time of reversing magnetization reduces at the same time.This new approach makes AOS an ideal solution for energy-effective and fast magnetic recording,paving the way for future developments in high-speed,low-power-consumption data recording devices.
基金
Beihang Hefei Innovation Research Institute Project(BHKX-19-01)
National Natural Science Foundation of China(12004025,52121001)。
