Navigation Links
Graphene reveals its magnetic personality
Date:1/8/2012

In a report published in Nature Physics, they used graphene, the world's thinnest and strongest material, and made it magnetic.

Graphene is a sheet of carbon atoms arranged in a chicken wire structure. In its pristine state, it exhibits no signs of the conventional magnetism usually associated with such materials as iron or nickel.

Demonstrating its remarkable properties won Manchester researchers the Nobel Prize in Physics in 2010.

This latest research led by Dr Irina Grigorieva and Professor Sir Andre Geim (one of the Nobel prize recipients) could prove crucial to the future of graphene in electronics.

The Manchester researchers took nonmagnetic graphene and then either 'peppered' it with other nonmagnetic atoms like fluorine or removed some carbon atoms from the chicken wire. The empty spaces, called vacancies, and added atoms all turned out to be magnetic, exactly like atoms of, for example, iron.

"It is like minus multiplied by minus gives you plus", says Dr Irina Grigorieva.

The researchers found that, to behave as magnetic atoms, defects must be far away from each other and their concentration should be low. If many defects are added to graphene, they reside too close and cancel each other's magnetism. In the case of vacancies, their high concentration makes graphene disintegrate.

Professor Geim said: "The observed magnetism is tiny, and even the most magnetized graphene samples would not stick to your fridge.

"However, it is important to reach clarity in what is possible for graphene and what is not. The area of magnetism in nonmagnetic materials has previously had many false positives.

"The most likely use of the found phenomenon is in spintronics. Spintronics devices are pervasive, most notably they can be found in computers' hard disks. They function due to coupling of magnetism and electric current.

"Adding this new degree of functionality can prove important for potential applications of graphene in electronics", adds Dr Grigorieva.


'/>"/>
Contact: Daniel Cochlin
daniel.cochlin@manchester.ac.uk
0044-161-275-8387
University of Manchester
Source:Eurekalert

Related biology technology :

1. Graphene rips follow rules
2. Nanowiggles: Scientists discover graphene nanomaterials with tunable functionality in electronics
3. Imperfections may improve graphene sensors
4. Functionalized graphene oxide plays part in next-generation oil-well drilling fluids
5. Graphene earns its stripes
6. Imperfections may improve graphene sensors
7. Graphene foam detects explosives, emissions better than todays gas sensors
8. UCSB professor receives award for graphene electronics research
9. Researching graphene nanoelectronics for a post-silicon world
10. Research: Graphene grows better on certain copper crystals
11. Frustration inspires new form of graphene
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/5/2016)... ... December 05, 2016 , ... The ... the nation’s premier cannabis technology and application experts, Chip Baker. Chip Baker formerly ... Colorado. Over the past 30 years, Chip Baker other industry veterans have made ...
(Date:12/5/2016)... According to the new ... (Consumable, Instruments, Automated Cell Expansion System), Cells Types ... Research, Cancer, and Cell-Based Research), End-users (Biopharmaceutical and ... Revenue, Trends, Growth, Share, Size and Forecast to ... cell expansion market is expected to reach USD ...
(Date:12/5/2016)... Dec. 5, 2016 /PRNewswire/ - Resverlogix Corp. ("Resverlogix" ... independent Data and Safety Monitoring Board (DSMB) for ... cardiovascular disease (CVD) patients has completed a second ... should continue as planned without any modifications. The ... no safety or efficacy concerns were identified. The ...
(Date:12/5/2016)... 2016  Eisai Inc. announced today final results ... rufinamide, which were presented at the 2016 Annual ... from December 2-6 in Houston, Texas ... and cognitive data showed that patients who received ... tolerability profiles, cognitive development and behavior, compared to ...
Breaking Biology Technology:
(Date:6/3/2016)... , June 3, 2016 ... Management) von Nepal ... und Lieferung hochsicherer geprägter Kennzeichen, einschließlich Personalisierung, ... führend in der Produktion und Implementierung von ... der Ausschreibung im Januar teilgenommen, aber Decatur ...
(Date:6/2/2016)... June 2, 2016   The Weather Company , an ... Ads, an industry-first capability in which consumers will be able ... to ask questions via voice or text and receive relevant ... Marketers have long sought an advertising solution ... can be personal, relevant and valuable; and can scale across ...
(Date:6/1/2016)... -- Favorable Government Initiatives Coupled With Implementation ... to Boost Global Biometrics System Market Through 2021  ... " Global Biometrics Market By Type, By End ... - 2021", the global biometrics market is projected to ... growing security concerns across various end use sectors such ...
Breaking Biology News(10 mins):