ADVERTISEMENT
2 /3 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

ENJOY UNLIMITED ACCES TO C&EN

Materials

A Ferroelectric Minus The Metal

Easily processed organic salt could supplant toxic metal oxides in data storage and other electronic applications

by Bethany Halford
January 28, 2013 | APPEARED IN VOLUME 91, ISSUE 4

Barium titanate and other ferroelectric materials are prized for their ability to switch their polarization when an external electric field is applied. This makes them useful for a variety of applications, including medical imaging, computer memory, and solar energy harvesting. The problem is that metal oxide ferroelectrics are difficult to process into films and often contain toxic metals. Now researchers report that crystals of the organic salt diisopropylammonium bromide, or DIPAB, have ferroelectric properties on par with those of barium titanate (Science, DOI: 10.1126/science.1229675). Although organic ferroelectrics have been known for nearly 100 years, none have proved to possess the properties of their metal oxide cousins, until now. A team led by Ren-Gen Xiong of China’s Southeast University and Jiangyu Li of the University of Washington, Seattle, went hunting for an organic material with structural features that lend themselves to ferroelectricity as well as a high melting point. They found that DIPAB had spontaneous polarization similar to that of barium titanate as well as several other benchmark ferroelectric features. Furthermore, DIPAB can be processed from aqueous solution, making it easy to use and sustainable.

X

Article:

This article has been sent to the following recipient:

Leave A Comment

*Required to comment