Nanotechnology Now

Our NanoNews Digest Sponsors


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

Diamonds closer to becoming ideal semiconductors: Researchers find new method for doping single crystals of diamond May 25th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Attosecond physics: A switch for light-wave electronics May 24th, 2016

Supercrystals with new architecture can enhance drug synthesis May 24th, 2016

Thin films

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Sensors

Dartmouth team creates new method to control quantum systems May 24th, 2016

Electronic device detects molecules linked to cancer, Alzheimer's and Parkinson's: An inexpensive portable biosensor has been developed by researchers at Brazil's National Nanotechnology Laboratory with FAPESP's support May 20th, 2016

Making organs transparent to improve nanomedicine (video) May 13th, 2016

Scientists take a major leap toward a 'perfect' quantum metamaterial: Berkeley Lab, UC Berkeley researchers lead study that uses trapped atoms in an artificial crystal of light May 13th, 2016

Announcements

Diamonds closer to becoming ideal semiconductors: Researchers find new method for doping single crystals of diamond May 25th, 2016

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

Attosecond physics: A switch for light-wave electronics May 24th, 2016

Supercrystals with new architecture can enhance drug synthesis May 24th, 2016

Tools

Light can 'heal' defects in new solar cell materials: Defects in some new electronic materials can be removed by making ions move under illumination May 24th, 2016

More light on cancer: Scientists created nanoparticles to highlight cancer cells May 21st, 2016

Nanotubes are beacons in cancer-imaging technique: Rice University researchers use spectral triangulation to pinpoint location of tumors May 21st, 2016

Carnegie Mellon develops bio-mimicry method for preparing and labeling stem cells: Method allows researchers to prepare mesenchymal stem cells and monitor them using MRI May 19th, 2016

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







Car Brands
Buy website traffic