Navigation Links
Domain walls that conduct electricity
Date:1/29/2009

BERKELEY, CA The logic and memory functions of future electronic devices could shrink dramatically to one or two nanometers (billionths of a meter) instead of the many tens of nanometers that characterize today's most advanced elements - if a way can be found to control domain walls, the ultrathin transition zones that separate regions of a material having different magnetic, electric, or other properties.

In a material called bismuth ferrite, an unusual compound of bismuth, iron, and oxygen (BiFe03), scientists at the Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley have discovered a property of domain walls never seen before. Although bismuth ferrite is an insulator, the researchers found that between domains having different electrical polarization, the domain walls themselves just two nanometers wide conduct electricity at room temperature.

"A domain wall is virtually a two-dimensional sheet through the material," says Ramamoorthy Ramesh of Berkeley Lab's Materials Sciences Division (MSD), a professor in the Department of Materials Science and Engineering and the Department of Physics at UC Berkeley. "Because they are so small and can be moved, domain walls have great promise for future electronics."

Ramesh heads MSD's Quantum Materials program for the study of complex materials, which is supported by the Office of Basic Energy Sciences (BES) within the Department of Energy's Office of Science. Unlike familiar metals or semiconductors, the basic electrical and magnetic properties of complex materials are extremely sensitive to their environment, says Ramesh. "Materials called multiferroics are an example of this kind of material, and bismuth ferrite is a prototypical multiferroic."

The promise of multiferroics

Multiferroics may be an unfamiliar term, but is not likely to remain so for long. It describes materials that simultaneously exhi
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology technology :

1. Time Domain Showcases Precision Location Capability of Ultra Wideband PLUS Product Line at HIMSS 2008
2. NorthPoint Domain and NYU Vascular Associates Partner to Develop New Generation of Care Delivery Informatics Instruments
3. NorthPoint Domain and Boston Medical Center Partner to Apply Advanced Patient Engagement Instruments to Pioneering Cardiac Robotic Surgery Program
4. WallSt.net (www.wallst.net) Announces Upcoming Interview With CEO of Osteologix
5. WallSt.net (www.wallst.net) Announces Upcoming Interview With CEO of DNAPrint Genomics
6. WallSt.net Announces Upcoming Interview with CEO of BioSante Pharmaceuticals
7. WallSt.net Announces Upcoming Interview With CEO of Biomoda
8. Synvista Therapeutics to be Featured on Wallst.net
9. WallSt.net Announces Upcoming Interview With CEO Of Immunosyn Corporation
10. AMDL Presentation of China Success Story from Rodman & Renshaw Annual Healthcare Conference Available at WallStreetReporter.com
11. WallSt.net Announces Upcoming Interview With CEO of ReBuilder Medical Technologies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Domain walls that conduct electricity
(Date:11/26/2014)... 25 novembre 2014 /PRNewswrie/ -- Theravalues Corporation annuncia con ... europeo in occasione di Hi Europe 2014 (dal 2 ... Si tratta della curcumina con la maggiore biodisponibilità ... cristalli) e ingredienti approvati dalle norme europee. ... della pianta curcumina ( Curcuma longa ) che è ...
(Date:11/24/2014)... , Nov. 24, 2014  IGI Laboratories, Inc. ... based specialty generic pharmaceutical company, today announced it ... to the U.S. Food and Drug Administration (FDA), which ... 2014 to seven, with eighteen submissions now pending at ... President and CEO of the Company, commented, "Our team ...
(Date:11/24/2014)... 2014  Last week, Representatives Gus Bilirakis ... took a bold bipartisan step on behalf of ... Act. Original co-sponsors of the legislation include Representatives ... incentivize drug makers and innovators to "repurpose" major ... cancers, which opens the door to the development ...
(Date:11/24/2014)...   First published ... Elsevier , a world-leading provider of scientific, technical ... the launch of the latest title in the Current ... Food Science . Current ... new platform to keep up-to-date with the expanding volume of ...
Breaking Biology Technology:La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 2La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 3IGI Laboratories, Inc. Announces ANDA Submission 2OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 3
... University of California, Berkeley, have developed a pressure-sensitive electronic ... new meaning to the term "thin-skinned." "The ... the human skin, which means incorporating the ability to ... of electrical engineering and computer sciences and head of ...
... Spotlights Innovations During ESTRO29 -- VEENENDAAL, The Netherlands, September 10, 2010 ... ... ... ,; var first_result; // Results are keyed by longUrl, so we need to grab the first one. ...
... lure of greater profits elsewhere in the world may ... and distribution of affordable drugs, vaccines and diagnostics for ... millions of poor people, experts warn. And they ... support for continuing the success of firms finding homegrown ...
Cached Biology Technology:Engineers make artificial skin out of nanowires 2Engineers make artificial skin out of nanowires 3Nucletron Spotlights Innovations During ESTRO29 2Nucletron Spotlights Innovations During ESTRO29 3Nucletron Spotlights Innovations During ESTRO29 4Nucletron Spotlights Innovations During ESTRO29 5Nucletron Spotlights Innovations During ESTRO29 6Nucletron Spotlights Innovations During ESTRO29 7Global health vs. global wealth: Looming choice for health firms in developing countries 2Global health vs. global wealth: Looming choice for health firms in developing countries 3Global health vs. global wealth: Looming choice for health firms in developing countries 4
(Date:11/4/2014)... – University of Utah engineers developed the first room-temperature ... produce electricity without needing to ignite the fuel. These ... electronics, off-grid power and sensors. , A study of ... Chemical Society journal ACS Catalysis . , Fuel ... between a fuel and an oxygen-rich source such as ...
(Date:11/4/2014)... study examining only marketing directed at children on ... has found that the majority of black, middle-income ... marketing tactics. , Authored by Arizona State University ... is the first to examine the use of ... fast food restaurants and its relationship to demographics. ...
(Date:11/3/2014)... , Nov. 3, 2014 Research and Markets ... "Cell Therapy - Technologies, Markets and Companies" to their ... therapy technologies and methods, which have already started to play ... cell transplantation is replacing the old fashioned bone marrow transplants. ... therapy is bound to become a part of medical practice. ...
Breaking Biology News(10 mins):Jet-fueled electricity at room temperature 2Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3
... Scientists at Joslin Diabetes Center have identified biological mechanisms ... against kidney disease, and also mechanisms that inhibit its ... online by Diabetes, may lead to the development of ... to prevent the harmful effects of hyperglycemia on renal ...
... melanoma is a malignant form of skin cancer and ... there is. Treatment is particularly difficult, because melanomas are ... Chris Marine, (VIB/KU Leuven) have found a new line ... cancers, namely by combating the interaction between the protein ...
... observes a colorful jellyfish pulsating through the ocean, Greek ... animal once was known as the medusa, after the ... gaze turned people into stone, and now, thanks to ... researchers at the California Institute of Technology (Caltech) and ...
Cached Biology News:Joslin researchers gain new understanding of diabetes and kidney disease 2Joslin researchers gain new understanding of diabetes and kidney disease 3New line of approach for combination therapy against melanoma 2Medusa reimagined: Caltech-led team reverse engineers a jellyfish with the ability to swim 2Medusa reimagined: Caltech-led team reverse engineers a jellyfish with the ability to swim 3Medusa reimagined: Caltech-led team reverse engineers a jellyfish with the ability to swim 4
Bovine Coronary Artery Endothelial Cells (BCAEC) (>500,000 cells)...
Bovine Pulmonary Artery Endothelial Cells (BPAEC) (>500,000 cells)...
Bovine Brain Microvascular Endothelial Cells (BBMVEC) (>500,000 cells)...
The improved design and new mechanical solutions of Finnpipette Focus Multichannel Plus improves accuracy and precision.In these low volume multichannel pipettes, the super blow-out function ensures ...
Biology Products: