UC Riverside research could lead to new multi-functional electronic devices
Graphene, a one-atom thick sheet of carbon atoms arranged in a hexagonal lattice, has many desirable properties. Magnetism alas is not one of them. Magnetism can be induced in graphene by doping it with magnetic impurities, but this doping tends to disrupt graphene’s electronic properties.
Now a team of physicists at the University of California, Riverside has found an ingenious way to induce magnetism in graphene while also preserving graphene’s electronic properties. They have accomplished this by bringing a graphene sheet very close to a magnetic insulator – an electrical insulator with magnetic properties.
“This is the first time that graphene has been made magnetic this way,” said Jing Shi, a professor of physics and astronomy, whose 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 multi-functional.”
The finding has the potential to increase graphene’s use in computers, as in computer chips that use electronic spin to store data.
Study results appeared online earlier this month in Physical Review Letters.
The magnetic insulator Shi and his team used was yttrium iron garnet grown by laser molecular beam epitaxy in his lab. The researchers placed a single-layer graphene sheet on an atomically smooth layer of yttrium iron garnet. They found that yttrium iron garnet magnetized the graphene sheet. In other words, graphene simply borrows the magnetic properties from yttrium iron garnet.
Magnetic substances like iron tend to interfere with graphene’s electrical conduction. The researchers avoided those substances and chose yttrium iron garnet because they knew it worked as an electric insulator, which meant that it would not disrupt graphene’s electrical transport properties. By not doping the graphene sheet but simply placing it on the layer of yttrium iron garnet, they ensured that graphene’s excellent electrical transport properties remained unchanged.
Read more: Researchers Make Magnetic Graphene
The Latest on: Magnetic Graphene
via Google News
The Latest on: Magnetic Graphene
- New boron-lanthanide nanostructureon June 27, 2020 at 10:48 am
A newly discovered nanocluster has a geometry that ''has not been observed in chemistry heretofore,'' the researchers say.
- Paragraf consults the Oracle to fill chairmanship roleon June 23, 2020 at 12:59 am
At Oracle he led a $1 billion consulting business with 6,000 staff, which doubled in size under his leadership. He was CEO of two UK-listed public companies: CMG plc, with 12,000 staff and £900m ...
- ‘Magic-angle’ graphene doubles upon June 22, 2020 at 11:46 am
Jarillo-Herrero and colleagues made the first magic-angle graphene by stacking two sheets of 2D carbon on top of each other to form a moiré lattice. When they twisted these sheets so that the ...
- Paragraf Limited: Paragraf appoints Alistair Crawford as Chairmanon June 22, 2020 at 6:08 am
SOMERSHAM, UK / ACCESSWIRE / June 22, 2020 / Paragraf, the leader in graphene-based transformative electronic sensors and devices, is pleased to announce the appointment of Alistair Crawford as ...
- Paragraf appoints Alistair Crawford as Chairmanon June 22, 2020 at 6:04 am
Alistair joins Paragraf at a crucial time in its development, as the company is scaling up its technology portfolio and commercial reach. While existing products have a limited temperature range, ...
- Cheap And Easy Magnetic DNA Separation Method Needs Your Helpon June 20, 2020 at 5:00 pm
That’s where this cheap and easy magnetic DNA separation method comes ... of success in fields ranging from satellite tracking to graphene production, we’ll bet he’ll nail this one too.
- Paragraf goes nuclear with CERN partnershipon June 18, 2020 at 3:02 pm
Paragraf is a spin-out from the Centre for Gallium Nitride group of Professor Sir Colin Humphreys in the Department of Materials Science at the university. Building on significant know-how and IP, ...
- Graphene with sodium could make better batterieson June 17, 2020 at 8:06 pm
Graphene doped with sodium can be a key player in making cheap batteries and spintronic devices, EPFL scientists discover. "Lithium is becoming ...
- Paragraf partners with CERN to demonstrate unique properties of new graphene Hall effect sensoron June 17, 2020 at 4:41 am
Paragraf has embarked on a working partnership with the Magnetic Measurement section at CERN, the European Organisation for Nuclear Research, with both parties set to demonstrate how new opportunities ...
- Smart Money Is Betting On These 5 Exciting Energy Technologieson June 15, 2020 at 3:00 pm
Venture capitalists continue to bet big on cleantech energy solutions such as Fusion Energy, Geothermal Energy and Graphene Super Batteries ...
via Bing News