Navigation Links
Discovery of material with amazing properties
Date:6/24/2012

Normally a material can be either magnetically or electrically polarized, but not both. Now researchers at the Niels Bohr Institute at the University of Copenhagen have studied a material that is simultaneously magnetically and electrically polarizable. This opens up new possibilities, for example, for sensors in technology of the future. The results have been published in the scientific journal, Nature Materials.

Materials that can be both magnetically and electrically polarized and also have additional properties are called multiferroics and were previously discovered by Russian researchers in the 1960s. But the technology to examine the materials did not exist at that time. It is only now, in recent years, that researchers have once again focused on analyzing the properties of such materials. Now you have research facilities that can analyze the materials down to the atomic level.

Surprising test results

"We have studied the rare, naturally occurring iron compound, TbFeO3, using powerful neutron radiation in a magnetic field. The temperature was cooled down to near absolute zero, minus 271 C. We were able to identify that the atoms in the material are arranged in a congruent lattice structure consisting of rows of the heavy metal terbium separated by iron and oxygen atoms. Such lattices are well known, but their magnetic domains are new. Normally, the magnetic domains lie a bit helter-skelter, but here we observed that they lay straight as an arrow with the same distance between them. We were completely stunned when we saw it," explains Kim Lefmann, Associate Professor at the Nano-Science Center, University of Copenhagen.

They were very strange and very beautiful measurements and it is just such a discovery that can awaken the researchers' intense interest. Why does it look like this?

Explaining physics

The experiments were conducted at the neutron research facility Helmholtz-Zentrum in Berlin in collaboration with researchers in Holland, Germany, at ESS in Lund and at Ris/DTU. They would like to get a general understanding of the material and with the help of calculations; and have now arrived at a more precise image of the relationship between the structure of the material and its physical properties.

"What the models are describing is that the terbium walls interact by exchanging waves of spin (magnetism), which is transferred through the magnetic iron lattice. The result is a Yukawa-like force, which is known from nuclear and particle physics. The material exhibits in a sense the same interacting forces that hold the particles together in atomic nuclei," explains Heloisa Bordallo, Associate Professor at the Niels Bohr Institute.

It is precisely this interaction between the transition metal, iron, and the rare element, terbium, that plays an important role in this magneto-electrical material. The terbium's waves of spin cause a significant increase in the electric polarization and the interaction between the ions of the elements creates one of the strongest magneto-electrical effects observed in materials.

"Through these results we found a new pathway to discover and develop new multiferroics", emphasize the researchers in the group. Now it is up to further research to determine whether this new effect could lead to new applications of these materials with the amazing physical properties.


'/>"/>
Contact: Gertie Skaarup
45-35-32-53-20
University of Copenhagen
Source:Eurekalert  

Related biology technology :

1. Discovery Labs Reports Third Quarter Financial Results and Progress on Lead Programs
2. Receptos and Ono Establish Collaboration with Focus on Bioactive Lipid Discovery Research
3. Cellular Dynamics Announces Commercial Launch of iCell® Neurons for Neuroscience Drug Discovery
4. Discovery of a dark state could mean a brighter future for solar energy
5. Thomson Reuters Research Forecasts the Onset of the Targeted Drug Discovery Era
6. AnaptysBio Announces New Strategic Antibody Discovery
7. Discovery opens door to low-cost negative refraction, new products and industries
8. Thomson Reuters Cortellis Drives Drug Discovery and Development With Powerful New Web Services
9. Discovery in Nature elucidates immune cells in skin and supports novel vaccine approach
10. AlphaBio Centrix, LLC Announces a New Discovery for Programming Energetic Patches
11. Mars, Incorporated Answers Question: How Does Feeding People and Pets Nurture Science and Discovery? At TEDMED 2012
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Discovery of material with amazing properties
(Date:5/3/2016)... ... May 03, 2016 , ... Flagship Biosciences, the leader ... to its Board of Directors. Dr. Gillett recently retired from Charles River Laboratories ... and Chief Scientific Officer. A board-certified veterinary pathologist, Dr. Gillett joined Charles River ...
(Date:5/3/2016)... May 3, 2016  Dr. Thomas P. McHugh ... The Woodlands, Texas , now offers ... of treated fat cells in just 25-minutes, leaving a ... 90 percent of Americans report feeling bothered by excess ... reduction procedures are a growing industry. This innovative new ...
(Date:5/2/2016)... Ohio (PRWEB) , ... May 02, 2016 , ... ... Designed with its clients in mind, the fresh look and added functionality give ... , “Recent years have seen a dynamic shift in agriculture – from precision ...
(Date:4/29/2016)... ... 29, 2016 , ... Proove Biosciences, Inc ., the ... launch of the Proove Health Foundation . The Foundation is a non-profit ... use of personalized medicine for tackling the nation’s most-pressing healthcare epidemics. As part ...
Breaking Biology Technology:
(Date:4/19/2016)... -- The new GEZE SecuLogic access control ... system solution for all door components. It can be ... interface with integration authorization management system, and thus fulfills ... dimensions of the access control and the optimum integration ... considerable freedom of design with regard to the doors. ...
(Date:4/13/2016)...  IMPOWER physicians supporting Medicaid patients in ... standard in telehealth thanks to a new partnership with ... IMPOWER patients can routinely track key health measurements, such ... and, when they opt in, share them with IMPOWER ... local retail location at no cost. By leveraging this ...
(Date:3/23/2016)... WAKEFIELD, Massachusetts , March 23, 2016 ... kombiniert im Interesse erhöhter Sicherheit Gesichts- und ... Xura, Inc. (NASDAQ: MESG ... heute bekannt, dass das Unternehmen mit SpeechPro ... insbesondere aus der Finanzdienstleistungsbranche, wird die Möglichkeit ...
Breaking Biology News(10 mins):