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Magnetized graphene could 'change the course of human civilization'
EDN Network ^ | March 10, 2015 | Amy Norcross

Posted on 03/10/2015 11:57:26 PM PDT by 2ndDivisionVet

Graphene, a material formed of a mesh of hexagonal carbon atoms, has, according to ExtremeTech author Ryan Whitwam, “many fantastic properties that could change the course of human civilization. It’s chemically stable, highly conductive, and incredibly strong.” In a recent New Yorker article, John Colapinto stated graphene “may be the most remarkable substance ever discovered.” One thing graphene is not, however, is magnetic.

Researchers at the University of California, Riverside have developed a way to induce magnetism in graphene while preserving its electronic properties. The research team did this by bringing a single sheet of graphene into close proximity to a magentic insulator.

Though graphene is intrinsically nonmagnetic, “it is possible,” says IEEE Spectrum Contributing Editor Dexter Johnson, “to induce magnetism in graphene by doping the material with magnetic impurities. Unfortunately, that process comes at the high cost of eliminating all the attractive electrical properties of graphene, such as its high conductivity.”

“This is the first time that graphene has been made magnetic this way,” says Jinh Shi, a professor of physics and astronomy at UC Riverside. Shi’s lab led the research. “The magnetic graphene acquires new electronic properties so that new quantum phenomena can arise. These properties can lead to new electronic devices that are more robust and multifunctional.”

First placing the single-layer graphene sheet on an insulating ferromagnetic thin film made of yttrium iron garnet (YIG) -- grown using laser molecular beam epitaxy in the UC Riverside lab -- magnetized the graphene while preserving its electronic properties. According to the researchers, graphene “simply borrows the magnetic properties from YIG.” Because the YIG is an electric insulator it did not disrupt the graphene’s electrical transport properties.

The research team subsequently carried out Hall-effect measurements, which indicated that the induced ferromagnetic graphene state arises from spin polarization of its electrons due to coupling between electrons in the two materials. Shi and his team also observed that the coupling enhances graphene’s normally low spin-orbit coupling, which could “lead to transport phenomena such as the quantized AHE [anomalous Hall effect], which are potentially useful for spintronics.”

The results of the study, conducted by Shi, Zhiyong Wang, Chi Tang, Raymond Sachs, and Yafis Barlas, were published online in January in Physical Review Letters.


TOPICS: Business/Economy; Computers/Internet; Science
KEYWORDS: electronics; graphene; manufacturing; materials; spintronics
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To: Star Traveler

It’s like Apple said with the new MacBook that they announced at their Apple Event. They said that it was the keyboard that defined the size of the MacBook. There are certain requirements for “human beings” ... :-) ...

 

Well then, we just need to design smaller and more compact humans.

21 posted on 03/11/2015 10:05:37 AM PDT by zeugma ( The Clintons Could Find a Loophole in a Stop Sign)
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To: Sirius Lee

It means your porn will become even more realistic.


22 posted on 03/11/2015 10:07:27 AM PDT by dfwgator
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To: zeugma

Put that in the suggestion of to God ... :-) ...


23 posted on 03/11/2015 10:08:17 AM PDT by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: 2ndDivisionVet; Ernest_at_the_Beach; blam; ShadowAce; AdmSmith; AnonymousConservative; Berosus; ...

Thanks 2ndDivisionVet.


24 posted on 03/11/2015 10:21:22 AM PDT by SunkenCiv (What do we want? REGIME CHANGE! When do we want it? NOW!)
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To: 2ndDivisionVet
...“may be the most remarkable substance ever discovered.”

"Discovered" would indicate that it exists in nature and we found it, right? But wasn't it created in a lab? < /semantic alert >

25 posted on 03/11/2015 10:33:16 AM PDT by JimRed (Excise the cancer before it kills us; feed & Ifwater the Tree of Liberty! TERM LIMITS NOW & FOREVER!)
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To: dfwgator
It means your porn will become even more realistic.

Yay! It will be so realistic that one will actually experience the shame, reduced expectations, quiet desperation, cloying sense of entitlement and regret?

26 posted on 03/11/2015 3:59:12 PM PDT by Sirius Lee (All that is required for evil to advance is for government to do "something")
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To: Hostage

Are you saying AI will be producing robots that will produce their own upgrades?


27 posted on 03/11/2015 4:07:55 PM PDT by GOPJ (Obama on Hillary: "I did not have TEXT with that woman"... Freeper hoosiermama)
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To: 2ndDivisionVet

Graphene is probably the most overhyped material, ever. It’s led to a lot of research grants and little else..


28 posted on 03/11/2015 4:11:44 PM PDT by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: 2ndDivisionVet

Cool beans.


29 posted on 03/11/2015 4:28:48 PM PDT by P.O.E. (Pray for America)
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To: Sirius Lee

Has anyone come up with a way to get satellite reception during a rainstorm?


30 posted on 03/21/2015 10:35:23 PM PDT by hsrazorback1 (Seek truth.)
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