Navigation Links
New magnetic behavior in nanoparticles could lead to even smaller digital memories
Date:12/19/2013

Electronic devices such as mobile phones and tablets spur on a scientific race to find smaller and smaller information processing and storage elements. One of the challenges in this race is to reproduce certain magnetic effects at nanometre scale.

An international collaboration of scientists led by researchers from the Universitat Autnoma de Barcelona Department of Physics and the Institut Catala de Nanociencia i Nanotecnologia, and with the participation of the Universitat de Barcelona, has been able to reproduce in particles measuring 10 to 20 nanometres a magnetic phenomenon of great importance in magnetic devices: the antiferromagnetic coupling between layers.

This phenomenon appears when coupling layers of materials with different magnetic properties, which allows controlling the magnetic behaviour of the whole device. This property has very important technological applications. For example, it forms an important part of data reading systems found in hard drives and in the MRAM memories of computers and mobile devices.

Researchers have managed for the first time to reproduce this phenomenon in nanoscopic materials, measuring a mere few tens of atoms in diameter. They managed to do this by using iron-oxide particles surrounded by a thin layer of manganese-oxide and vice versa: manganese-oxide particles covered by a layer of iron-oxide. The discovery provides an unprecedented control of the magnetic behaviour of nanoparticles, since it permits controlling and easily adjusting their properties without having to manipulate their shape or composition, solely by controlling the temperature and the magnetic fields surrounding it.

"We've been able to reproduce a magnetic behaviour not previously observed in nanoparticles, and this paves the way for miniaturisation up to limits which seemed impossible for magnetic storage and other more sophisticated applications such as spin filters, magnetic codifiers and multi-level recording", explain Josep Nogus, ICREA research professor, and Maria Dolors Bar, professor of Applied Physics.


'/>"/>

Contact: Dolors Baró
dolors.baro@uab.cat
34-935-811-657
Universitat Autonoma de Barcelona
Source:Eurekalert  

Related biology technology :

1. Negative resistivity leads to positive resistance in the presence of a magnetic field
2. Rare Earth Market & Nd-Fe-B Permanent Magnetic Material in China Global Review Analysis at DeepResearchReports.com
3. Magnetic nanoparticles could aid heat dissipation
4. Controlling magnetic clouds in graphene
5. Spirax Sarco Releases the EFT10 Electromagnetic Flow Transmitter for Measurement of Conductive Fluids
6. Magnetic Resonance Imaging (MRI) System Market worth $5.24 Billion By 2018
7. New technology in the magnetic cooling of chips
8. Researchers invent acoustic-assisted magnetic information storage
9. UCLA engineers develop new energy-efficient computer memory using magnetic materials
10. New UCLA Engineering research center to revolutionize nanoscale electromagnetic devices
11. Magnetic vortex reveals key to spintronic speed limit
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New magnetic behavior in nanoparticles could lead to even smaller digital memories
(Date:12/6/2016)... 6, 2016  The Texas Medical Center ... (HISA) today announced the establishment of a new ... Australia and the Texas Medical ... HISA and the Texas Medical Center, with ... create a global health innovation ecosystem where emerging technologies ...
(Date:12/5/2016)... (PRWEB) , ... December 05, 2016 , ... ... nanocellulose, including both cellulose nanocrystals and cellulose nanofibrils. The composition claims are ... There are also claims directed to combination with polymers, carbon fibers, graphene, and ...
(Date:12/5/2016)... 5, 2016 According to ... by Products (Consumable, Instruments, Automated Cell Expansion System), ... Stem Cell Research, Cancer, and Cell-Based Research), End-users ... - Global Revenue, Trends, Growth, Share, Size and ... the global cell expansion market is expected to ...
(Date:12/5/2016)... LAKE, N.J. , Dec. 5, 2016 /PRNewswire/ ... Phase 3 open-label two-year study of rufinamide, which ... the American Epilepsy Society (AES) held from December ... Analysis of final two-year safety, tolerability and cognitive ... with rufinamide experienced similar safety and tolerability profiles, ...
Breaking Biology Technology:
(Date:11/29/2016)... 29, 2016   Neurotechnology , a ... recognition technologies, today released FingerCell 3.0, a ... solutions that run on low-power, low-memory microcontrollers. ... less than 128KB of memory, enabling it ... have limited on-board resources, such as: mobile ...
(Date:11/28/2016)... Nov. 28, 2016 "The ... of 16.79%" The biometric system market is in ... in the near future. The biometric system market is ... 2022, at a CAGR of 16.79% between 2016 and ... of biometric technology in smartphones, rising use of biometric ...
(Date:11/22/2016)... According to the new market research report "Biometric System Market ... Multi-Factor), Component (Hardware and Software), Function (Contact and Non-contact), Application, and Region ... to grow from USD 10.74 Billion in 2015 to reach USD 32.73 ... Continue Reading ... ...
Breaking Biology News(10 mins):