In BriefThis technology could enable the development of 3-D magnetic recording where independent data is written and read from overlapping layers of a multilayer recording media.
- For decades engineers have thought about the idea of recording information in the depth of magnetic media, rather than just as a 2-D recording. However, conventional magnetic fields and magnetic recording materials didn’t provide a clean way to write media with different data at different depth.
- Toshiba demonstrated a method for using magnetic fields from microwave radiation to reverse the magnetization direction selectively in a multi-layer magnetic recording media at the InternationalConference on Magnetism (ICM).
- Toshiba projects that this technology could enable 10 Tbpsi magnetic recording (current products are up to 1.2 Tbpsi today), and substantially increase hard disk drive capacity. The promise of MAMR to increase the density of magnetic recording is great but it hasn’t yet been shown to increase areal density in a full laboratory demonstration just yet.