Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

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.

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.