By a News Reporter-Staff News Editor at Science Letter -- Current study results on Science have been published. According to news originating from Madison, Wisconsin, by NewsRx correspondents, research stated, "Polarization switching in ferroelectric thin films occurs via nucleation and growth of 180 degrees domains through a highly inhomogeneous process in which the kinetics are largely controlled by defects, interfaces and pre-existing domain walls. Here we present the first real-time, atomic-scale observations and phase-field simulations of domain switching dominated by pre-existing, but immobile, ferroelastic domains in Pb(Zr0.2Ti0.8)O-3 thin films."
Our news journalists obtained a quote from the research from the University of Wisconsin, "Our observations reveal a novel hindering effect, which occurs via the formation of a transient layer with a thickness of several unit cells at an otherwise charged interface between a ferroelastic domain and a switched domain. This transient layer possesses a low-magnitude polarization, with a dipole glass structure, resembling the dead layer. The present study provides an atomic level explanation of the hindering of ferroelectric domain motion by ferroelastic domains."
According to the news editors, the research concluded: "Hindering can be overcome either by applying a higher bias or by removing the as-grown ferroelastic domains in fabricated nanostructures."
For more information on this research see: Atomic-scale mechanisms of ferroelastic domain-wall-mediated ferroelectric switching. Nature Communications, 2013;4():58-66. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group - www.nature.com/; Nature Communications - www.nature.com/ncomms/)
The news correspondents report that additional information may be obtained from P. Gao, University of Wisconsin, Dept. of Mat Sci & Engn, Madison, WI 53706, United States. Additional authors for this research include J. Britson, J.R. Jokisaari, C.T. Nelson, S.H. Baek, Y.R. Wang, C.B. Eom, L.Q. Chen and X.Q. Pan (see also Science).
Keywords for this news article include: Madison, Science, Wisconsin, United States, North and Central America
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC