Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Magnetic skyrmions: Not the only ones of their class: Jülich researchers discover a new type of magnetic particle-like object for data storage devices of the future

Encoding digital data as a sequence of magnetic bobbers (foreground) and skyrmions (further back).
CREDIT
Forschungszentrum Jülich/N. Kiselev
Encoding digital data as a sequence of magnetic bobbers (foreground) and skyrmions (further back). CREDIT Forschungszentrum Jülich/N. Kiselev

Abstract:
These objects, which are referred to as "chiral magnetic bobbers", are three-dimensional magnetic structures that appear near the surfaces of certain alloys.

Magnetic skyrmions: Not the only ones of their class: Jülich researchers discover a new type of magnetic particle-like object for data storage devices of the future

Juelich, Germany | Posted on June 28th, 2018

"For a long time, the unique object for research in the field of chiral magnets was the magnetic skyrmion. We now provide a new object for investigation by researchers - a chiral bobber - which is characterized by a number of unique properties", says Dr. Nikolai Kiselev from Jülich's Peter Grünberg Institute (PGI-1). Three years ago, together with the institute's Director Prof. Stefan Blügel and other collaborators, they predicted the existence of this new class of magnetic structures theoretically. Now, researchers from the Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (Director Prof. Rafal E. Dunin-Borkowski and his colleagues) have succeeded in demonstrating the existence of chiral bobbers in a real material experimentally.

The stability of magnetic structures such as skyrmions is related to a property of the material known as chirality. Just as a right hand cannot be converted into a left hand for reasons of symmetry, right-handed and left-handed magnetic structures cannot be converted into one another. Furthermore, both skyrmions and the newly-discovered chiral bobbers are very small, with diameters of typically only a few tens of nanometers. Therefore, they can in principle be used to pack data very densely on a memory chip. However, their small size makes their observation highly challenging. "The visualization of magnetic texture on such a small scale requires special state-of-the-art techniques that are accessible in only a few laboratories worldwide", explains Rafal Dunin-Borkowski.

There is another important reason why magnetic solitons (another name for particle-like objects in nonlinear physics) such as skyrmions and chiral bobbers are so promising for applications. In contrast to data bits in hard disk drives, skyrmions are movable objects. Their motion along a guiding track in a chip can be induced by a very weak pulse of electrical current. This property provides new opportunities for the development of a completely new concept of magnetic solid-state memory - the so-called skyrmion racetrack memory. "The mobility of skyrmions allows data to move from write to read elements without the need for any movable mechanical parts such as read and write heads and spining hard disk itself", explains Nikolai Kiselev. This capability saves energy because components that move generally require more energy, occupy more space and tend to be sensitive to mechanical vibrations and shocks. A new solid state magnetic memory would be free of such disadvantages.

The newly discovered magnetic particles now make it possible to encode digital data directly with two different types of magnetic objects, namely with skyrmions and magnetic bobbers.

"Until now, it was assumed that digital data should somehow be represented as a sequence of skyrmions and empty spaces", says Stefan Blügel. The distance between successive skyrmions then encodes binary information. However, it must then be controlled or quantized, so that no information is lost through spontaneous drift of the skyrmions. Instead, the newly discovered three-dimensional magnetic particles offer opportunities to encode digital data directly as a sequence of skyrmions and magnetic bobbers, which can each flow freely without needing to maintain precise distances between successive data bit carriers.

Further research is required to develop practical applications. In the iron-germanium alloy studied by Nikolai Kiselev and his colleagues, the structures are only stable up to 200 Kelvin, which corresponds to -73.5 degrees Celsius. However, based on theoretical considerations, it is predicted that magnetic bobbers may also occur in other chiral magnets and, like some recently discovered species of skyrmions, may also exist at room temperature.

####

For more information, please click here

Contacts:
Tobias Schloesser

49-246-161-4771

Copyright © Forschungszentrum Juelich

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 Links

RELATED JOURNAL ARTICLE:

Related News Press

News and information

Arrowhead Pharmaceuticals Reports Inducement Grants under NASDAQ Marketplace Rule 5635(c)(4) June 22nd, 2019

Next-gen solar cells spin in new direction: Phosphorene shows efficiency promise June 21st, 2019

Researchers report new understanding of thermoelectric materials: Discovery leads to promising new materials for converting waste heat to power June 21st, 2019

Millions with neurological diseases could find new option in implantable neurostimulation devices June 21st, 2019

Magnetism

Small currents for big gains in spintronics: A new low-power magnetic switching component could aid spintronic devices June 14th, 2019

New interaction between thin film magnets discovered: Physicists of Johannes Gutenberg University Mainz lay the foundations for new three-dimensional spin structures June 7th, 2019

Laser technique could unlock use of tough material for next-generation electronics: Researchers make graphene tunable, opening up its band gap to a record 2.1 electronvolts May 30th, 2019

Rice U. lab grows stable, ultrathin magnets: Rare iron oxide could be combined with 2D materials for electronic, spintronic devices May 24th, 2019

Skyrmions

Discovery may lead to new materials for next-generation data storage: Army-funded research demonstrates emergent chirality in polar skyrmions for the first time in oxide superlattices May 10th, 2019

Electric skyrmions charge ahead for next-generation data storage: Berkeley Lab-led research team makes a chiral skyrmion crystal with electric properties; puts new spin on future information storage applications April 18th, 2019

Taking magnetism for a spin: Exploring the mysteries of skyrmions January 23rd, 2019

2-D magnetism: Atom-thick platforms for energy, information and computing research: Scientists say the tiny 'spins' of electrons show potential to one day support next-generation innovations in many fields October 31st, 2018

Possible Futures

'Nanoemulsion' gels offer new way to deliver drugs through the skin: Novel materials made with FDA-approved components could deliver large payloads of active ingredients June 21st, 2019

Next-gen solar cells spin in new direction: Phosphorene shows efficiency promise June 21st, 2019

Researchers report new understanding of thermoelectric materials: Discovery leads to promising new materials for converting waste heat to power June 21st, 2019

Millions with neurological diseases could find new option in implantable neurostimulation devices June 21st, 2019

Chip Technology

New record: 3D-printed optical-electronic integration June 18th, 2019

Can break junction techniques still offer quantitative information at single-molecule level June 18th, 2019

Mysterious Majorana quasiparticle is now closer to being controlled for quantum computing: Princeton researchers detect a robust Majorana quasiparticle and show how it can be turned on and off June 14th, 2019

Small currents for big gains in spintronics: A new low-power magnetic switching component could aid spintronic devices June 14th, 2019

Memory Technology

New Video Highlights Specific Topics Sought in Call for Papers for the 2019 IEEE International Electron Devices Meeting (IEDM) June 13th, 2019

New interaction between thin film magnets discovered: Physicists of Johannes Gutenberg University Mainz lay the foundations for new three-dimensional spin structures June 7th, 2019

Discovery may lead to new materials for next-generation data storage: Army-funded research demonstrates emergent chirality in polar skyrmions for the first time in oxide superlattices May 10th, 2019

Electric skyrmions charge ahead for next-generation data storage: Berkeley Lab-led research team makes a chiral skyrmion crystal with electric properties; puts new spin on future information storage applications April 18th, 2019

Discoveries

'Nanoemulsion' gels offer new way to deliver drugs through the skin: Novel materials made with FDA-approved components could deliver large payloads of active ingredients June 21st, 2019

Next-gen solar cells spin in new direction: Phosphorene shows efficiency promise June 21st, 2019

Ice lithography: opportunities and challenges in 3D nanofabrication June 21st, 2019

Researchers report new understanding of thermoelectric materials: Discovery leads to promising new materials for converting waste heat to power June 21st, 2019

Announcements

Arrowhead Pharmaceuticals Reports Inducement Grants under NASDAQ Marketplace Rule 5635(c)(4) June 22nd, 2019

Ice lithography: opportunities and challenges in 3D nanofabrication June 21st, 2019

Researchers report new understanding of thermoelectric materials: Discovery leads to promising new materials for converting waste heat to power June 21st, 2019

Millions with neurological diseases could find new option in implantable neurostimulation devices June 21st, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

'Nanoemulsion' gels offer new way to deliver drugs through the skin: Novel materials made with FDA-approved components could deliver large payloads of active ingredients June 21st, 2019

Next-gen solar cells spin in new direction: Phosphorene shows efficiency promise June 21st, 2019

Ice lithography: opportunities and challenges in 3D nanofabrication June 21st, 2019

Electron-behaving nanoparticles rock current understanding of matter: Discovery will lead to new methods for materials design June 20th, 2019

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project