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:1/22/2015)... , Jan. 22, 2015   Cypher Genomics, Inc., ... Inc. (NASDAQ: SQNM ), the leading ... for next generation noninvasive prenatal tests (NIPT). Through ... technology, called Mantis™, to advance analysis of clinically-relevant ...
(Date:1/22/2015)... , Jan. 22, 2015  Derma Sciences, Inc. ... company focused on advanced wound care, announces that ... tissues, have been added to the Premier, Inc. ... the opportunity for the AMNIOEXCEL® and AMNIOMATRIX® product ...
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: PTBI, ... announced the closing of an underwritten public offering of 3,500,000 ... an aggregate 3,500,000 shares of common stock, at an offering ... warrants have a per share exercise price of $5.00, are ...
(Date:12/24/2014)... 2014 “Preparative & Process Chromatography ... Consumables (Columns, Solvents, Buffers, Valves, Guages, Seals), Accessories, ... - Forecasts to 2019” provides a detailed overview ... market trends, and strategies impacting the preparative and ...
Breaking Biology Technology:Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4
... Wis. Wisconsin businesses and individuals are invited ... Products Awards Competition, which recognizes benefits coming from ... technologies. , ,Governor's New Products Awards are ... or more employees); large companies (500-999 employees); medium ...
... latest business venture of Mike Strand in Eau Claire ... competition, has landed $250,000 from the Chippewa Valley ... has a plan to put video screens showing advertising ... the statewide business-plan competition finals, it won the emerging ...
... Wis. — Sonic Foundry posted mixed financial numbers for ... while still posting a net loss. , ,Revenues were $8.3 ... with unit sales up 74 percent, owing to multiple unit ... , ,Operating expenses increased by 20 percent, however, and the ...
Cached Biology Technology:
(Date:12/22/2014)... 2014  NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ... the growing mobile commerce market, announces it has retained famous ... the 2015 International CES debut of the Wocket™ biometric smart ... at the NXT-ID booth January 6th and 7 th , ...
(Date:12/22/2014)... 2014 Holiday Season may be the brightest ever for ... the long anticipated floodgates for consumer biometrics may finally ... phones, tablets, and wearable mobile devices that incorporate biometrics ... with nearly 4.8 billion biometric devices by 2020.   ...
(Date:12/19/2014)... Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has announced ... Perimeter Security Systems Market" report to their offering. ... American perimeter security market is estimated to grow at a ... market holds a larger share in this market, ...
Breaking Biology News(10 mins):NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3
... a detailed picture of how and when opsins evolved, ... including humans. The evolutionary origins of vision remain ... relationships among the earliest opsin-possessing animals. Dr Davide ... at NUI Maynooth performed a computational analysis to test ...
... scattering experiments have provided new insights into the origin ... all over the world. The analysis conducted by scientists ... Grenoble, and published in Scientific Reports , follows ... reduce these harmful complications. Wherever you are in ...
... in Toronto have established that a drug recently approved ... a rare form of cystic fibrosis works in an ... various forms of cystic fibrosis. Cystic fibrosis is ... world. Cystic fibrosis patients carry a defective gene that ...
Cached Biology News:Neutrons help explain why antibiotics prescribed for chemotherapy cause kidney failure 2Neutrons help explain why antibiotics prescribed for chemotherapy cause kidney failure 3Neutrons help explain why antibiotics prescribed for chemotherapy cause kidney failure 4Insights into a new therapy for a rare form of cystic fibrosis 2
... weight determinations for petroleum-based applications. Multiple solvents can be used, such as water, benzene, formamide, ... ... ... ...
rat Leptin...
SHEEP ANTI ESCHERICHIA COLI...
... culture chambered coverslips are convenient ... staining and imaging. The chambered ... with standard optical-quality coverslips and ... to use. Preassembled CultureWell systems ...
Biology Products: