The ability to pack bits of data on computer hard drives has skyrocketed more than 10,000-fold over the past 3 decades. You can now fit more than 100 Hollywood movies on the average machine. One reason has been the steady improvement in sensors used to read and write bits of data in the magnetic materials used to make the disks. Now researchers describe the most powerful such sensing material yet to work at room temperature. The discovery may open the door not just to reading out smaller data bits, but also to a wide range of improved magnetic technologies such as making cheaper touch screen displays.
EDIT: not sure hot to my a hyper link titled "source".