Featured Research

from universities, journals, and other organizations

Pushing The Limits Of Hard Disk Storage

Date:
October 10, 2005
Source:
Ecole Polytechnique Fédérale de Lausanne
Summary:
Just how much data can we cram onto a hard disk ? In a paper appearing online today in Physical Review Letters, EPFL (Ecole Polytechnique Federale de Lausanne) Professor Harald Brune and his colleagues report what they believe to be the ultimate density limit of magnetic recording.

Just how much data can we cram onto a hard disk? In a paper appearingonline today in Physical Review Letters, EPFL (Ecole PolytechniqueFederale de Lausanne) Professor Harald Brune and his colleagues reportwhat they believe to be the ultimate density limit of magneticrecording.

His group created a self-assembled lattice of non-interactingtwo-atoms-high islands of cobalt on a single-crystal gold substrate.The islands' density -- 26 trillion islands per square inch -- is thehighest yet recorded and 200 times the bit density of current computerhard disks. The magnetic properties of the islands are the most uniformever recorded, and because the islands don't interact with each other,they can each hold one bit of data.

However, it's not a storage medium "ready to use" because theserecords were posted at the uncomfortably cold temperature of -223 C!Above this temperature, thermal excitation starts to reverse themagnetization and the information in the memory gets volatile.

Brune and his colleagues are still trying to solve this blockingtemperature problem using bi-metallic islands of 500-800 atoms that canmaintain the desired magnetic properties at room temperature.

###

On the web: http://ipn2.epfl.ch/LNS/index.htm.


Story Source:

The above story is based on materials provided by Ecole Polytechnique Fédérale de Lausanne. Note: Materials may be edited for content and length.


Cite This Page:

Ecole Polytechnique Fédérale de Lausanne. "Pushing The Limits Of Hard Disk Storage." ScienceDaily. ScienceDaily, 10 October 2005. <www.sciencedaily.com/releases/2005/10/051010095854.htm>.
Ecole Polytechnique Fédérale de Lausanne. (2005, October 10). Pushing The Limits Of Hard Disk Storage. ScienceDaily. Retrieved September 1, 2014 from www.sciencedaily.com/releases/2005/10/051010095854.htm
Ecole Polytechnique Fédérale de Lausanne. "Pushing The Limits Of Hard Disk Storage." ScienceDaily. www.sciencedaily.com/releases/2005/10/051010095854.htm (accessed September 1, 2014).

Share This




More Matter & Energy News

Monday, September 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Australian Airlines Relax Phone Ban Too

Australian Airlines Relax Phone Ban Too

Reuters - Business Video Online (Aug. 26, 2014) — Qantas and Virgin say passengers can use their smartphones and tablets throughout flights after a regulator relaxed a ban on electronic devices during take-off and landing. As Hayley Platt reports the move comes as the two domestic rivals are expected to post annual net losses later this week. Video provided by Reuters
Powered by NewsLook.com
Hurricane Marie Brings Big Waves to California Coast

Hurricane Marie Brings Big Waves to California Coast

Reuters - US Online Video (Aug. 26, 2014) — Huge waves generated by Hurricane Marie hit the Southern California coast. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Chinese Researchers Might Be Creating Supersonic Submarine

Chinese Researchers Might Be Creating Supersonic Submarine

Newsy (Aug. 26, 2014) — Chinese researchers have expanded on Cold War-era tech and are closer to building a submarine that could reach the speed of sound. Video provided by Newsy
Powered by NewsLook.com
Breakingviews: India Coal Strained by Supreme Court Ruling

Breakingviews: India Coal Strained by Supreme Court Ruling

Reuters - Business Video Online (Aug. 26, 2014) — An acute coal shortage is likely to be aggravated as India's supreme court declared government coal allocations illegal, says Breakingviews' Peter Thal Larsen. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins