Brown大学和IBM Almaden研究中心的研究人员用超速激光脉冲研究磁相互作用,这项工作可能最终导致超快数据存储器的出现.研究人员通过使用亚皮秒激光脉冲光激发双层NiFe/NiO薄膜的铁磁与反铁磁界面,在100ps之内改变了原子团的极性.这种快速转变源于单向变换偏转电场中大的快速激光感应调制和坡莫合金膜中的相干磁化旋转.目前研究人员正使用这一技术研究集中处理数千个原子运动过程中的物理现象.研究人员们希望它最终能超过目前磁数据存储介质中转变磁极顺序的速度极限,现在这 Researchers at Brown University and the IBM Almaden Research Center used ultra-fast laser pulses to study magnetic interactions, which could eventually lead to the emergence of ultra-fast data memory. Researchers used sub-picosecond laser pulses to excite double NiFe / NiO thin films The ferromagnetic and antiferromagnetic interfaces change the polarity of atomic groups within 100ps, which is due to the large rapid laser induced modulation in the unidirectional deflection electric field and the coherent magnetization rotation in permalloy films. Researchers are hoping that it will eventually exceed the speed limit for changing the order of poles in current magnetic data storage media, and now that researchers are using this technique to focus on the physical phenomena involved in thousands of atomic motions