Archive for September, 2012

Winkler, Jablonski, Taheri, and colleagues publish in Journal of Applied Physics

Posted in News on September 4th, 2012 by admin – Comments Off on Winkler, Jablonski, Taheri, and colleagues publish in Journal of Applied Physics

Chris Winkler, Michael Jablonski, Dr. Taheri, and colleagues’ latest paper, titled “Accessing intermediate ferroelectric switching regimes with time-resolved transmission electron microscopy” has been published online in the Journal of Applied Physics.

From the abstract: “BiFeO3 (BFO) is one of the most widely studied magneto-electric multiferroics. The magneto-electric coupling in BiFeO3, which allows for the control of the ferroelectric and magnetic domain structures via applied electric fields, can be used to incorporate BiFeO3 into novel spintronics devices and sensors. Before BiFeO3 can be integrated into such devices, however, a better understanding of the dynamics of ferroelectric switching, particularly in the vicinity of extended defects, is needed. We use in situ transmission electron microscopy (TEM) to investigate the response of ferroelectric domains within BiFeO3 thin films to applied electric fields at high temporal and spatial resolution. This technique is well suited to imaging the observed intermediate ferroelectric switching regimes, which occur on a time- and length-scale that are too fine to study via conventional scanning-probe techniques. . .”

The paper can be viewed directly here.

The paper can also be accessed on the AIP website: Journal of Applied Physics.

Spurgeon publishes highlight on Philly Materials Day in MRS Bulletin

Posted in News on September 3rd, 2012 by admin – Comments Off on Spurgeon publishes highlight on Philly Materials Day in MRS Bulletin

Steven Spurgeon has published an article in the Materials Research Society Bulletin‘s October 2012 issue highlighting Philly Materials Day. The article describes the planning and execution of this annual event by faculty at Drexel and the University of Pennsylvania.

From the article: “For a discipline that can be traced back to the construction of the pyramids and the forging of ancient bronze weapons, materials science is still a largely unknown branch of science. Last year, when the US Public Broadcasting Service (PBS) decided to air the NOVA series titled “Making Stuff,” faculty at Drexel University in Philadelphia saw an opportunity to draw attention to the study of solids. . . .”

The article can be viewed directly here or on the Materials Research Society Bulletin website.

More information on Philly Materials Day can be found here.

Also in this issue, Spurgeon describes recent research on room-temperature ferromagnetic spin bags in Sr3YCo4O10+δ oxides. That article is available here or on the Materials Research Society Bulletin website.