Hitachi Maxell, Ltd. and Tokyo Institute of Technology today jointly announced the collaboratively development of ultra high capacity tape media featuring a capacity of over 50 TB per standard tape cartridge.
This joint team demonstrated a world-record areal density
of 45.0 Gb/in2 in linear formatted perpendicular magnetic
recording media. This technology enables a capacity of more
than 50 TB per standard tape cartridge - 33 times larger
than the capacity of the latest available LTO Ultrium 5
The coating type media, which is made by coating the
magnetic powder on the base film, is commonly used for
archive in public libraries, public records offices and the
long-term storage. In order to increase the capacity of
these type of media developers had to create an ultra-thin
film with magnetic particles sized below 10nm. This was
very difficult to achieve using coating methods.
Hitachi's super-high density nanometer-sized magnetic film
was developed by combining Maxell?s tape medium
design/evaluation technologies and a new thin-film
formation method (Facing Targets Sputtering method),
developed by associate professor Shigeki Nakagawa et al.in
the Tokyo Institute of Technology. The method
allowed Hitachi to make a large-capacity magnetic tape
with ultra-small magnetic particles (less than 10nm). As a
result, the areal recording density of the new tape medium
reached the 45.0 Gb/in2. Using this film in typical data
tape cartridge media offers a capacity of 50TB per
cartridge or even more.
Hitachi confirmed a linear recording density of 531 kbpi
and a track pitch of 300 nm without cross-track
interference using a newly designed tester.
Hitachi will present these developments at the 9th
Perpendicular Magnetic Recording Conference (PMRC 2010; May
17 - 19, 2010, Sendai, Japan).