Custom Search

More than 10,000 searchable pages indexed.

Greetings: There is so much good stuff on RF Cafe that there is no way to list or link to all of it here. Please use the Search box or the Site Map to find what you want - there is a good chance I have it. Thanks!

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<
Job Board
About RF Cafe™
Copyright 1999-2015
Sitemap

Magnetoresistance - Fodder for Micro Hard Drives
Kirt's Cogitations™ #139

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

Please click here to return to the Table of Contents.

   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.


< Previous                      Next >


Magnetoresistance - Fodder for Micro Hard Drives

Researchers at SUNY, Buffalo, NY, have revealed the potential of an effect known as "ballistic magnetoresistance," whereby applying atomic-dimension "nanocontacts" to magnetic media resulted in a 3,000% change in magnetoresistance at low switching fields of a few hundred oersted. This has the potential to increase hard drive storage densities from GBits/in² to TBits/in². Interior magnetic-domain walls measure about 1 nm vs. 100 to 200 nm for a normal conductor. Electrons forced through such a small conduit literally do not have space to bounce around inside the conductor and producing heat. With a nanocontact's 1 nm wide domain walls, electrons stream through, creating a draft-like effect that prompted the label "ballistic." Look for thumbnail-size hard drives in about a decade.

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger… single-handedly redefining what an engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5th MOB: My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website