The applications of GMR have revolutionized the techniques for retrieving data from hard disk drives, which have seen unprecedented advances over the past ten years.

• GMR现象起源于载流子自旋与材料磁性的相互作用.；该效应的应用革新了硬盘中读取数据的技术，使硬盘技术在过去十年得到飞速发展；