Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Researchers watch a next-gen memory bit switch in real time

Abstract:
For the first time, engineering researchers have been able to watch in real time the nanoscale process of a ferroelectric memory bit switching between the 0 and 1 states.

Researchers watch a next-gen memory bit switch in real time

Ann Arbor, MI | Posted on November 17th, 2011

Ferroelectric materials have the potential to replace current memory designs, offering greater storage capacity than magnetic hard drives and faster write speed and longer lifetimes than flash memory. Replacing dynamic random access memory—the short-term memory that allows your computer to operate—with ferroelectric memory can significantly decrease energy usage in computers. Ferroelectric memory doesn't require power to retain data.

A paper on the research is published in the Nov. 18, 2011, edition of Science.

"This is a direct visualization of the operation of ferroelectric memory," said principal investigator Xiaoqing Pan, a professor in the Department of Materials Science and Engineering and director of the U-M Electron Microbeam Analysis Laboratory.

"By following ferroelectric switching at this scale in real time, we've been able to observe new and unexpected phenomena. This work will help us understand how these systems work so one can make better memory devices that are faster, smaller and more reliable."

The researchers were able to see that the switching process of ferroelectric memory begins at a different site in the material than they initially believed. And this switching can be sparked with a lot less power than they had hypothesized.

"In this system, electric fields are naturally formed at the ferroelectric/electrode interfaces and this lowers the barrier for switching—for free. That means you can write information with much lower power consumption," Pan said.

Pan is leading the development of special hybrid materials that contain both ferroelectric and magnetic components and could lead to next-generation magnetoelectric memory devices. This new study reports the behavior of one such material. An advantage of using these hybrid materials in memories is that they combine the advantages of both electric and magnetic memory classes: the ease of writing ferroelectric memory and the ease of reading magnetic memory. The interactions between ferroelectric and magnetic orders allow these hybrid materials to be integrated into other novel designs such as spintronics, which harness the intrinsic "up" or "down" spin of electrons.

Researchers from Cornell University, Penn State University, the University of Washington, the University of Wisconsin and Peking University also contributed to the work. The paper is called "Domain Dynamics during Ferroelectric Switching." The research is funded by the U.S. Department of Energy and the National Science Foundation.

Ferroelectrics, discovered about 90 years ago, are characterized by a spontaneous electric polarization that can be reoriented between different orientations by an applied electric field. This ability to form and manipulate the regions (domains) with different polarization orientations at the nanometer scale is key to the utility of ferroelectric materials for devices such as nonvolatile memories. The ferroelectric switching occurs through the nucleation and growth of favorably oriented domains and is strongly influenced by defects and interfaces with electrical contacts in devices. It is critical for memory devices to understand how the ferroelectric domain forms, grows and interacts with defects and interfaces.

####

About University of Michigan
The University of Michigan College of Engineering is ranked among the top engineering schools in the country. At $180 million annually, its engineering research budget is one of the largest of any public university. Michigan Engineering is home to 11 academic departments, numerous research centers and expansive entrepreneurial programs. The college plays a leading role in the Michigan Memorial Phoenix Energy Institute and hosts the world-class Lurie Nanofabrication Facility. Michigan Engineering's premier scholarship, international scale and multidisciplinary scope combine to create The Michigan Difference.

For more information, please click here

Contacts:
Nicole Casal Moore

734-647-7087

Copyright © University of Michigan

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 Links

Xiaoqing Pan:

U-M College of Engineering:

Related News Press

News and information

Solid state physics: Quantum matter stuck in unrest August 1st, 2015

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Kalam: versatility personified August 1st, 2015

Chip Technology

This could replace your silicon computer chips: A new semiconductor material made from black phosphorus may be a candidate to replace silicon in future tech July 30th, 2015

March 2016; 6th Int'l Conference on Nanostructures in Iran July 29th, 2015

Meet the high-performance single-molecule diode: Major milestone in molecular electronics scored by Berkeley Lab and Columbia University team July 29th, 2015

Short wavelength plasmons observed in nanotubes: Berkeley Lab researchers create Ludinger liquid plasmons in metallic SWNTs July 28th, 2015

Memory Technology

Controlling phase changes in solids: Controlling phase changes in solids July 29th, 2015

Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient July 27th, 2015

Spintronics: Molecules stabilizing magnetism: Organic molecules fixing the magnetic orientation of a cobalt surface/ building block for a compact and low-cost storage technology/ publication in Nature Materials July 25th, 2015

Better memory with faster lasers July 14th, 2015

Discoveries

Solid state physics: Quantum matter stuck in unrest August 1st, 2015

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Announcements

Self-assembling, biomimetic membranes may aid water filtration August 1st, 2015

Transparent, electrically conductive network of encapsulated silver nanowires: A novel electrode for optoelectronics August 1st, 2015

Harris & Harris Group Portfolio Company, HZO, Announces Partnerships with Dell and Motorola August 1st, 2015

Advances and Applications in Biosensing, Sensor Power, and Sensor R&D to be Covered at Sensors Global Summit August 1st, 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