User talk:H. Muraoka

Strong support-- H. Muraoka (talk) 08:12, 25 October 2022 (UTC) ==

Perpendicular magnetic recording, PMR, accomplished innovation to realize vast storage capacity for the “big-data” era. Thanks to PMR, whole magnetic storage devices, such as hard disk drives and tape storage devices, are able to largely increase its storage capacities. The contribution of PMR is applauded by the recent IEEE Oral Histories and many awards and honors.

PMR achieved the innovation of magnetic storage technologies by turning the recorded magnetization “perpendicular” to the recording medium surface. The essential breakthroughs consist of high-resolution media that have perpendicular magnetic anisotropy to stably maintain the recorded perpendicular magnetization, and the perpendicular recording heads that provide strong perpendicular magnetic field. The novel recording devices attained outstanding increase of recording density of PMR. They were both pioneering achievement.

Social impact of the innovation was significant for current and future Internet society. The Internet totally relies on data-driven technology, therefore, the large amount of information, or the “big data”, established with PMR data storage is indispensable. Magnetic data storage technology is capable to cope with the “data explosion” in the today’s Information Technology by PMR. The first paper on PMR was published in the IEEE Transactions on Magnetics in 1977, and the innovation was commercialized in 2005. It took somewhat long time 28 years after the first paper. It would be worthwhile to point out that our society needs PMR to meet the recent and future demand of the Internet society, which requires extremely large amount of information.

As described above, I am confident that PMR well deserves an IEEE Milestone.