Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Nano-Scientists Produce Field Sensors for Large Magnetic Resistances

Abstract:
Iranian researchers managed to produce a new kind of nano-layers which are suitable for synthesis of magnetic field sensors to be used in large magnetic resistances.

Nano-Scientists Produce Field Sensors for Large Magnetic Resistances

Iran | Posted on January 31st, 2010

The researchers could detect magnetic fields with magnitudes of less than 6 milliteslas (mT) by creating nanostructures of metals like platinum and copper on Si/SiO2/CuPt bases. Such a work is evaluated as a significant step forward in the production of magnetic field sensors with large magnetic resistances.

"In this work, a very thin film of silicon dioxide was deposited upon pure silicon, which was initially cleaned by a standard plasma cleaning process, by applying e-beam evaporation technique together with UV lithography," Seyedeh Maryam Banihashemian, a member of the research team, explained to the Iran Nanotechnology Initiative Council (INIC).

The effort led to the deposition of a 5 nanometers thick layer upon the silicon bed. In addition, by controlling layer deposition rates and pressure, the scientists managed to obtain layers of copper-platinum upon silicon-silicon dioxide bases with thicknesses less than 8 nanometers.

Then, the samples underwent wire annealing and their current-voltage curves in presence of a variable magnetic field were studied.

The obtained curves indicated that the sensors were capable of detecting magnetic filed with magnitudes of even less than 6 milliteslas. Finally nano layers were characterized by AFM, SEM, RBS tests.

"It was observed that nanometric structure of Cu-Pt, when its size is decreased, could detect magnetic fields whose magnitudes differ form that of the earth in terms of several milliteslas," Banihashemian added.

"Also, by applying magnetic fields, they exhibit unique characteristics like large magnetoresistances. These nanostructures can be used in magnetic field sensors, magnetic memories and biosensors." she added.

####

For more information, please click here

Copyright © FARS

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Rutgers, NIST physicists report technology with potential for sub-micron optical switches March 31st, 2015

Prototype 'nanoneedles' generate new blood vessels in mice: Scientists have developed tiny 'nanoneedles' that have successfully prompted parts of the body to generate new blood vessels, in a trial in mice March 31st, 2015

Super sensitive measurement of magnetic fields March 31st, 2015

Nanomedicine pioneer Mauro Ferrari at ETH Zurich March 31st, 2015

Thin films

LAMDAMAP 2015 hosted by the University March 26th, 2015

A new method for making perovskite solar cells March 16th, 2015

Engineers create chameleon-like artificial 'skin' that shifts color on demand March 12th, 2015

Researchers synthesize new thin-film material for use in fuel cells: Article in the journal APL Materials shows how to grow Bi2Pt2O7 pyrochlore, potentially a more effective cathode for future fuel cells March 10th, 2015

Sensors

From tobacco to cyberwood March 31st, 2015

UW scientists build a nanolaser using a single atomic sheet March 24th, 2015

Iranian Researchers Present Model to Determine Dynamic Behavior of Nanostructures March 24th, 2015

Nanodevice Invented in Iran to Detect Hydrogen Sulfide in Oil, Gas Industry March 20th, 2015

Announcements

Rutgers, NIST physicists report technology with potential for sub-micron optical switches March 31st, 2015

Prototype 'nanoneedles' generate new blood vessels in mice: Scientists have developed tiny 'nanoneedles' that have successfully prompted parts of the body to generate new blood vessels, in a trial in mice March 31st, 2015

Super sensitive measurement of magnetic fields March 31st, 2015

Nanomedicine pioneer Mauro Ferrari at ETH Zurich March 31st, 2015

Tools

PIHera: Largest Family of Piezo Stage Scanners with 10X Greater Positioning Area March 31st, 2015

New Applications Brochure on Complex Motion Control Systems for Scientific Research March 31st, 2015

'Atomic chicken-wire' is key to faster DNA sequencing March 30th, 2015

FEI Technology Award of the German Neuroscience Society Goes to Benjamin Judkewitz of the University of Berlin: Bi-annual award honors excellence in brain research during the German Neuroscience Society’s Annual Meeting, held 18-21 March 2015 March 26th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE