50 TB Per Tape Cartridge: Japanese Researchers Develop Ultra High Capacity Tape Media

May 19, 2010
Schematic view of an ultra high capacity tape medium

Hitachi Maxell and Tokyo Institute of Technology today jointly announced the development of ultra high capacity tape media with ultra thin nano-structured magnetic film by using of facing targets sputtering method. The demonstrated a world-record areal density of 45.0 Gb/in2 in linear formatted perpendicular magnetic recording media. This latest technology enables over 50 TB capacity per a standard tape cartridge, which equals to 33 times larger than a capacity of the latest LTO Ultrium 5 data cartridge.

Today, the usage of the data storage tape has expanded for the development of the information technology society, the electric archive in the public libraries and the public records offices, and the long-term storage of the business writing. Especially, the eco-friendly , the so-called “green storage”, that lowers and considers the environment, is demanded recently.

The coating type medium, which is made by coating the magnetic powder on the base film, is commonly used as a tape medium for the data storage now. It was difficult to make a thin film with the of the size below 10 nm by the coating method though it was necessary to make the magnetic powder small to increase the areal recording density and to raise storage capacity a cartridge.

This time, the super-high density nanometer-sized magnetic thin film was achieved by an open innovation by the combination of Maxell’s tape medium design/evaluation technologies and the new thin-film formation method, "Facing Targets Sputtering method" that associate professor Shigeki Nakagawa et al. in the Tokyo Institute of Technology, Graduate School of Engineering, Department of Physical Electronics developed. It allows us to make the large-capacity magnetic tape by low-noise laminated soft magnetic underlayers and the magnetic recording film with less 10 nm-diameter crystal grains.

When the areal recording density of the tape medium with this nanometer-structured super-high density magnetic thin film was evaluated, it was clarified of the possession of the areal recording density of 45.0 Gb/in2. When one makes the data tape cartridge of the common, linear formatted package by this medium, the capacity of the cartridge could be 50 TB or more.

Detailed results will be presented at the 9th Perpendicular Magnetic Recording Conference (PMRC 2010; May 17 - 19, 2010, Sendai, Japan).

Features

1. Formation of ultra high density nano-structured magnetic tape medium by facing targets sputtering
The nano-structured film was successively formed on a 4.5µm-thick base film by facing targets sputtering method, which was invented by Tokyo Institute of Technology, at room temperature without a substrate cooling system. Fine composite films, which couldn’t be prepared by previously used magnetron sputtering methods, can be formed by facing targets sputtering, thanks to damage-less formation of films on a very thin plastic film with separated plasma from the film.

Also, the medium noise was dramatically reduced by a laminated structure of thin (10 nm thick) soft magnetic underlayers. Total thickness of films including a protective layer and underlayers was about 100 nm, that can contribute high-density recording.

2. Achievement of a world-record areal density
A linear recording density of 531 kbpi and a track pitch of 300 nm without cross-track interference were confirmed by a specially designed tester, that enables precise head motion, when playback performance of the developed nano-structured magnetic tape medium was evaluated. The achieved areal density was 45.0 Gb/in2.

Explore further: How will Google, Apple shake up car insurance industry?

Related Stories

TDK Launches WORM-type LTO Ultrium 3 Data Cartridge

Dec 13, 2004

TDK Corporation has developed the D2406W-LTO3, a WORM-type (Write Once Read Many) LTO Ultrium 3 data cartridge for the LTO (Linear Tape-Open) Ultrium format. The new product will go on sale in Japan from December 15. Last mon ...

Sony Delivers Fifth Generation AIT Format

Aug 10, 2007

Sony Electronics has expanded its Advanced Intelligent Tape (AIT) format to a fifth-generation, doubling the capacity of the previous generation to 400 GB while delivering backwards compatibility.

Recommended for you

How will Google, Apple shake up car insurance industry?

6 hours ago

Car insurance industry, meet potential disrupters Google and Apple. Currently, nearly all mainstream insurers that offer driver-monitoring programs use relatively expensive devices that plug into a portal under the dashboard. ...

Cyclist's helmet, Volvo car to communicate for safety

Dec 21, 2014

Volvo calls it "a life-saving wearable cycling tech concept." The car maker is referring to a connected car and helmet prototype that enables two-way communication between Volvo drivers and cyclists for proximity ...

California puzzles over safety of driverless cars

Dec 21, 2014

California's Department of Motor Vehicles will miss a year-end deadline to adopt new rules for cars of the future because regulators first have to figure out how they'll know whether "driverless" vehicles ...

Cadillac CT6 will get streaming video mirror

Dec 20, 2014

Cadillac said Thursday it will add high resolution streaming video to the function of a rearview mirror, so that the driver's vision and safety can be enhanced. The technology will debut on the 2016 Cadillac ...

Poll: Americans skeptical of commercial drones (Update)

Dec 19, 2014

Americans broadly back tight regulations on commercial drone operators, according to a new Associated Press-GfK poll, as concerns about privacy and safety override the potential benefits of the heralded drone ...

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

SRDUB2
not rated yet May 19, 2010
LAMEEEEEE! Where the Data Crystals at?! The sooner I get some Data Crystals the sooner I can meet a Vorlon.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.