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

bit two or more ferroic properties ferromagnetism, ferroelectricity, or ferroelasticity. Bismuth ferrite, for example, is antiferromagnetic and ferroelectric as well. (Ferrum is Latin for iron; magnetism in iron was the first ferroic property ever observed, in ancient times, but the term ferroics now extends to include compounds and properties having nothing to do with iron.)

Ferromagnetism is the most familiar kind of magnetism, characterized by fields oriented by north and south poles. Ferroelectricity refers to materials which can be electrically polarized, having a preferred orientation of positive-negative electric charge. In ferroelastic materials "shape-memory" alloys, for example stress can cause a spontaneous change in orientation or crystal structure that can flip back again. A multiferroic material may have regions, separated by domain walls, where one or more of these different properties are differently oriented.

"One reason we are looking at oxides like bismuth ferrite is because we can control one property by changing others," says Ramesh. "These materials have a lot of personality."

Jan Seidel of the UC Department of Physics came upon the unique domain-wall properties of bismuth ferrite as he was performing scanning-probe measurements on thin films of the material created by Lane Martin of MSD; both are members of the Quantum Materials program.

"To make the films we hit targets of ceramic oxides containing bismuth and iron with a laser pulse and convert the solid to a plasma plume that is deposited on the substrate," Martin explains. "We choose the substrate structure and control the temperature and atmosphere to get the right mix and the right phase."

For the present work Martin grew films of bismuth ferrite between 50 and 200 nanometers thick on substrates of strontium titanium oxide (SrTiO3), a crystal whose similar lattice parameters and structure encouraged the growth of high-quality bismuth
'/>"/>

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:7/29/2015)... ... July 29, 2015 , ... G-CON Manufacturing, Inc., ... of their 2nd generation cell therapy POD® design. The 2nd generation portfolio not ... represents a new POD® design. , “G-CON first offered our miniPOD CT ...
(Date:7/29/2015)... CHICAGO , July 29, 2015  AmnioChor Inc., ... cell technology, is very pleased to announce that the ... has agreed to invest in their seed round ... OmniBank placental tissue storage capabilities. AmnioChor,s ... placenta, and the human stem cells living within those ...
(Date:7/29/2015)... , July 29, 2015  Indivior PLC (LON: ... for naloxone nasal spray was accepted and received Priority ... for the treatment of opioid overdose. This naloxone nasal ... specially formulated for optimal absorption into the nasal mucosa. ... minimal training so individuals may be better equipped to ...
(Date:7/29/2015)... /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ: AEZS ) ... optimized Erk inhibitor molecule for development, thus achieving ... new class of potential cancer therapies. ... for therapeutic intervention in cancer. Recently approved compounds ... B-Raf and Mek inhibitors. Erk inhibitors may be ...
Breaking Biology Technology:G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 2G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 3The Musculoskeletal Transplant Foundation Agrees to Invest in AmnioChor 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 2Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 3
... Mass.--Folding paper into shapes such as a crane or ... imagine trying to fold something that,s about a hundred ... it to use as an electronic device. , ... professor of mechanical engineering, is developing the basic principles ...
... Inc. (NASDAQ: VSGN ; TSX:VAS) today reported the results ... All dollar amounts referenced herein are in Canadian dollars unless ... cash equivalents totaled $8.6 million, compared with $23.5 million at ... As of January 31, 2009, our cash balance was $8.5 ...
... Feb. 27 Arkion(R) Life Sciences has received a ... Treatment in Louisiana effective March 1, 2009. The EPA ... protect field and sweet corn from marauding blackbirds and ... Avitec, Avipel(R) is applied to corn seed before planting ...
Cached Biology Technology:MIT uses nano-origami to build tiny electronic devices 2MIT uses nano-origami to build tiny electronic devices 3Vasogen Announces 2008 Year-End Results 2Vasogen Announces 2008 Year-End Results 3Vasogen Announces 2008 Year-End Results 4Vasogen Announces 2008 Year-End Results 5Vasogen Announces 2008 Year-End Results 6Vasogen Announces 2008 Year-End Results 7Vasogen Announces 2008 Year-End Results 8Vasogen Announces 2008 Year-End Results 9Vasogen Announces 2008 Year-End Results 10Vasogen Announces 2008 Year-End Results 11Crisis Exemption Granted to Market Avipel(R) Corn Seed Treatment in Louisiana 2
(Date:7/31/2015)... , Kina, 31. juli 2015 Den 10. ... afholdt af BGI fra den 22. - 25. oktober i ... Konferencen fejrer sin 10-års fødselsdag i år. Siden starten ... indflydelsesrige årlige møder på ,omik,-feltet, og er en af ... ICG-10 fokuserer på nylige gennembrud og fremskridt ...
(Date:7/31/2015)... , 31 de julio de 2015 ... (ICG-10,  www.icg-10.org ) del 22 al 25 de octubre ... La conferencia celebra su décimo aniversario este ... convertido en una de las reuniones anuales más influyentes ... es una de las conferencias científicas más dinámicas, entusiastas ...
(Date:7/31/2015)... China , 31 de julho de 2015 /PRNewswire/ ... (ICG-10, www.icg-10.org ) será realizada pela BGI de 22-25 ... . A conferência está celebrando seu ... em 2006, a ICG se tornou uma das reuniões ... um dos encontros científicos mais dinâmicos, entusiastas e prazerosos. ...
Breaking Biology News(10 mins):Den 10. internationale konference om Genomics (ICG-10) åbner i oktober 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 3A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 2A 10a. Conferência Internacional sobre Genômica (ICG-10) será em outubro 3
... Strasbourg 18/04/12 - Technology has transformed the way humans interact ... big ideas that will drive growth in marine and maritime ... and policy will gather at the 3rd Marine Board Forum ... Marine Board has convened this flagship event on the understanding ...
... April 2012 -- Several new studies that may help ... individual patients and of their tumors are being presented ... "A major goal of lung cancer treatment is ... Fiona Blackhall from The Christie NHS Foundation Trust in ...
... can be used to boost an enzyme,s function by as much ... detergents and a host of other products. In a paper ... team led by Pratul Agarwal of the Department of Energy,s Oak ... nature and it happens in the blink of an eye. ...
Cached Biology News:New technologies for a blue future 2Advances in personalized medicine for lung cancer 2Advances in personalized medicine for lung cancer 3Advances in personalized medicine for lung cancer 4Advances in personalized medicine for lung cancer 5ORNL process improves catalytic rate of enzymes by 3,000 percent 2