Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

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

NMTI announces breakthrough solutions for HAMR nanoantenna for next-generation ultra-high density magnetic storage November 21st, 2014

Leica Microsystems Presents Universal Hybrid Detector for Single Molecule Detection and Imaging at SfN and ASCB: Leica HyD SMD - the Optimal Detector for Precise and Reliable SMD data November 20th, 2014

Silver Nanoparticles Produced in Iran from Forest Plants Extract November 20th, 2014

Nano Sorbents Able to Remove Pollutions Caused by Oil Derivatives November 20th, 2014

Thin films

New way to move atomically thin semiconductors for use in flexible devices November 13th, 2014

Graphene Frontiers Partners with Madico to Accelerate Material Production: Deal to ignite and fulfill demand for industrial scale graphene film that supports energy, consumer electronics, membranes/filtration, solar and other applications November 12th, 2014

New materials for more powerful solar cells: Major breakthrough in solar energy November 11th, 2014

Drexel Engineers Improve Strength, Flexibility of Atom-Thick Films November 11th, 2014

Possible Futures

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

VDMA Electronics Production Equipment: Growth track for 2014 and 2015 confirmed: Business climate survey shows robust industry sector November 14th, 2014

Open Materials Development Will Be Key for HP's Success in 3D Printing: HP can make a big splash in 3D printing, but it needs to shore up technology claims and avoid the temptation of the razor/razor blade business model in order to flourish November 11th, 2014

Memory Technology

NMTI announces breakthrough solutions for HAMR nanoantenna for next-generation ultra-high density magnetic storage November 21st, 2014

New materials for more powerful solar cells: Major breakthrough in solar energy November 11th, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Announcements

NMTI announces breakthrough solutions for HAMR nanoantenna for next-generation ultra-high density magnetic storage November 21st, 2014

Leica Microsystems Presents Universal Hybrid Detector for Single Molecule Detection and Imaging at SfN and ASCB: Leica HyD SMD - the Optimal Detector for Precise and Reliable SMD data November 20th, 2014

Silver Nanoparticles Produced in Iran from Forest Plants Extract November 20th, 2014

Nano Sorbents Able to Remove Pollutions Caused by Oil Derivatives November 20th, 2014

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

NMTI announces breakthrough solutions for HAMR nanoantenna for next-generation ultra-high density magnetic storage November 21st, 2014

Quantum mechanical calculations reveal the hidden states of enzyme active sites November 20th, 2014

UO-industry collaboration points to improved nanomaterials: University of Oregon microscope puts spotlight on the surface structure of quantum dots for designing new solar devices November 20th, 2014

Silver Nanoparticles Produced in Iran from Forest Plants Extract November 20th, 2014

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 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE