Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New material science research may advance tech tools

01.09.2015

Hard, complex materials with many components are used to fabricate some of today's most advanced technology tools. However, little is still known about how the properties of these materials change under specific temperatures, magnetic fields and pressures.

Researchers from LSU, Fudan University, the University of Florida and the Collaborative Innovation Center of Advanced Microstructures in Nanjing, China, conducted research on materials that separate into different regions through a process called electronic phase separation, which is poorly understood.


LSU researchers created holes, or antidots, in thin films of manganite, which is used to build magnetic hard discs in computers. It was discovered that the edges of the antidots were magnetic.

Credit: Ward Plummer, Louisiana State University

Their research advances the understanding of how these materials can be manipulated without having to discover new materials, change the chemical concentration or apply external magnetic fields. Their research was published in the Proceedings of the National Academy of Sciences.

The researchers manipulated a steel gray mineral called manganite, which is used to build magnetic hard discs in computers. They created holes, or antidots, in thin films of manganite. It was discovered that the edges of the antidots were magnetic.

"The discovery of the magnetic edge states on the antidots made this work possible. Nobody had ever seen this before," said LSU Physics Professor Ward Plummer, a co-author on the study.

The magnetic phase state at the edges of the antidots raised the metal-to-insulator phase transition temperature of the manganite film. The researchers were able to replicate this through simulations.

"People have really tried to increase the temperature and reduce the operating field or tried to change the substrate or chemical composition. But we find this new approach with antidots to be quite useful," said Jian Shen, head of the Department of Physics at Fudan University and a co-author on the paper.

"What you really would like to do is get this temperature above room temperature, so you can switch the material by using a magnetic field," Plummer said.

###

This study is part of an on-going collaboration between Plummer and Shen. They began to work together on manganite systems with higher temperatures and lower magnetic fields in 1998 at Oak Ridge National Laboratory. This project continues with funding from the Department of Energy.

Media Contact

Alison Satake
asatake@lsu.edu
225-578-3870

 @LSUResearchNews

http://www.lsu.edu 

Alison Satake | EurekAlert!

More articles from Materials Sciences:

nachricht Serendipity uncovers borophene's potential
23.02.2017 | Northwestern University

nachricht Switched-on DNA
20.02.2017 | Arizona State University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>