Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Maksymovych delves into 'completely different' ferroelectrics

Petro Maksymovych
Petro Maksymovych

Abstract:
Maksymovych and his colleagues at DOE's Oak Ridge National Laboratory have turned their attention to ferroelectric oxides, which are unique in that their structure is correlated in such as way as to produce spontaneous polarization that can be reversed by applying electric field.

Maksymovych delves into 'completely different' ferroelectrics

Oak Ridge, TN | Posted on November 23rd, 2009

Leaving his Ukraine roots destined for the United States to pursue a scientific career, Petro Maksymovych had little idea of the abundance of possibilities he would encounter.

"One of the things I wanted was to do something completely different than what I did as a graduate student," he says.

He is succeeding. Maksymovych and his colleagues at DOE's Oak Ridge National Laboratory have turned their attention to ferroelectric oxides, which are unique in that their structure is correlated in such as way as to produce spontaneous polarization that can be reversed by applying electric field. The stability and non-volatility of spontaneous polarization have made ferroelectrics ubiqitous in portable memory devices such as such as RFID cards in the form of FeRAM (Ferro-electric Random Access Memory.) On the fundamental side, ferroelectricity is a key component of multiferroic behavior, where spontaneous polarization is coupled to strain and magnetization.

It was hypothesized years ago that spontaneous polarization can control the electronic conductance of the ferroelectric oxide. This archetypal property would enable ultra-high density information storage in nanoscale ferroelectric materials, and "it is also a stepping stone to a broad range of novel phenomena arising from coupling of soft-phonon order parameters to electron transport," Maksymovych says. The problem, he says, is that these materials are practically insulators—"you can't run current across them. One way out is to shrink them down—but then you lose the polarization property and with it memory functionality."

Maksymovych and his colleagues working in ORNL's Center for Nanophase Materials Sciences have found a way around that: "You don't necessarily need to shrink it down. All you have to do is [use] a somewhat leakier medium. That will give you access to the interface, where ferroelectricity will manifest itself the most."

"These ‘leaky' thin films are usually avoided due to their interference with other measurements, like polarization. To avoid the problem, the researchers have assumed a new approach based entirely on scanning probe microscopy.

"Macroscopic measurements have little means to differentiate intrinsic and extrinsic behaviors. Our approach, by virtue of its low-dimensional design, lets us identify the intrinsic properties and resolve their variation across the surface. If we so desire, we can subsequently go and find defects in the material to see what influence they have on the intrinsic properties, or whether they dominate them," Maksymovych says.

The new approach is anticipated to affect much more than electronic applications. "We are very excited by this very first step. We are confident that the intriguing atomistic and electronic dynamics of multiferroics will bring in a new dimension in the physics of these materials with future relevance to both energy and information," Maksymovych says.

He earned a B.S. in chemistry from the Kiev Tara Shevchenko University in Ukraine and graduated from the University of Pittsburgh with a doctorate in physical chemistry. He arrived at ORNL in 2007 as a Eugene P. Wigner Fellow.

Since arriving at ORNL, Maksymovych has already authored or co-authored a number of papers in major peer-reviewed journals. In addition to oxide materials, he is currently working on a new intiative at the Center for Nanophase Materials Sciences, focused on chemical dynamics and electronic properties of single molecules and molecular assemblies. Maksymovych still finds time to dabble in activities outside of work, such as playing with the latest computer technology going hiking, attending underground musical theaters and learning how to play guitar, "a major affection."

####

About Oak Ridge National Laboratory
ORNL is a multiprogram science and technology laboratory managed for the U.S. Department of Energy by UT-Battelle, LLC. Scientists and engineers at ORNL conduct basic and applied research and development to create scientific knowledge and technological solutions that strengthen the nation's leadership in key areas of science; increase the availability of clean, abundant energy; restore and protect the environment; and contribute to national security.

ORNL also performs other work for the Department of Energy, including isotope production, information management, and technical program management, and provides research and technical assistance to other organizations. The laboratory is a program of DOE's Oak Ridge Field Office.

For more information, please click here

Contacts:
Oak Ridge National Laboratory
P.O. Box 2008
Oak Ridge, TN 37831
865.574.4160

Copyright © Oak Ridge National Laboratory

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Protein Building Blocks for Nanosystems: Scientists develop method for producing bio-based materials with new properties April 17th, 2015

Oxford Instruments commissions high field outsert magnet system for the National High Magnetic Field Laboratory 32 Tesla magnet program April 17th, 2015

QD Vision Expands Product Line with Two-Millimeter Color LCD Display Optic: Color IQ™ Optic Enables Full-Color Gamut for Ultra-Thin Displays and All-in-One Computers April 16th, 2015

The National Science Foundation names engineering researcher Andrea Alú its Alan T. Waterman awardee for 2015: Alú is a pioneer in the field of metamaterials who has developed "cloaking" technology to make objects invisible to sensors April 16th, 2015

Thin films

Cobalt film a clean-fuel find: Rice University discovery is efficient, robust at drawing hydrogen and oxygen from water April 15th, 2015

The microscopic topography of ink on paper: Researchers have analyzed the varying thickness of printed toner in unprecedented 3-D detail, yielding insights that could lead to higher quality, less expensive and more environmentally-friendly glossy and non-glossy papers April 14th, 2015

New understanding of electromagnetism could enable 'antennas on a chip' April 9th, 2015

LAMDAMAP 2015 hosted by the University March 26th, 2015

Possible Futures

A glass fiber that brings light to a standstill: By coupling photons to atoms, light in a glass fiber can be slowed down to the speed of an express train; for a short while it can even be brought to a complete stop April 9th, 2015

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015

Memory Technology

DWI scientists program the lifetime of self-assembled nanostructures April 9th, 2015

Computers that mimic the function of the brain: A new step forward in memristor technology could bring us closer to brain-like computing April 6th, 2015

Mind the gap: Nanoscale speed bump could regulate plasmons for high-speed data flow April 1st, 2015

Next important step toward quantum computer: Scientists at the University of Bonn have succeeded in linking 2 different quantum systems March 30th, 2015

Announcements

Protein Building Blocks for Nanosystems: Scientists develop method for producing bio-based materials with new properties April 17th, 2015

Oxford Instruments commissions high field outsert magnet system for the National High Magnetic Field Laboratory 32 Tesla magnet program April 17th, 2015

Newly-Developed Nanocatalysts Increase Performance of Fuel Cells April 16th, 2015

Lanthanide-Organic Framework Nanothermometers Prepared by Spray-Drying April 16th, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

The National Science Foundation names engineering researcher Andrea Alú its Alan T. Waterman awardee for 2015: Alú is a pioneer in the field of metamaterials who has developed "cloaking" technology to make objects invisible to sensors April 16th, 2015

Major advance in artificial photosynthesis poses win/win for the environment: Berkeley Lab researchers perform solar-powered green chemistry with captured CO2 April 16th, 2015

Newly-Developed Nanocatalysts Increase Performance of Fuel Cells April 16th, 2015

Nanotubes with two walls have singular qualities: Rice University lab calculates unique electronic qualities of double-walled carbon nanotubes April 16th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE