IRG 1
Synergistic Linear and Nonlinear Phenomena in Multifunctional Oxide Ceramic Systems
Vinayak P. Dravid (Leader), materials science & engineering
Bruce W. Wessels (Co-Leader), materials science & engineering
Scott A. Barnett, materials science & engineering
Michael Bedzyk, materials science & engineering
Donald Ellis, physics
Arthur J. Freeman, physics
Gabriela Gonzalez Aviles, physics, DePaul University
Tobin J. Marks, chemistry
Thomas O. Mason, materials science & engineering
Kenneth R. Poeppelmeier, chemistry
IRG #1 seeks to advance fundamental knowledge leading to the development of energy-efficient and novel multifunctional devices for electronic, optoelectronic, storage, sensor and information technologies.
The methodologies employed by the group include exploring and exploiting the unique attributes of oxide materials, resulting in two or more functionalities; and developing a thin film platform to integrate multifunctional oxides.
The group focuses on oxides which simultaneously exhibit a combination of electrical conductivity, optical transparency, linear and non-linear response to external electrical, magnetic and stress fields. They are also working to validate and optimize coupled phenomena (for example optical transparency with electrical conductivity; ferroelectricity with ferromagnetism). The development of a thin film and heterostructure integration strategy is underway; and first-principles theory and simulation are being coupled with device modeling and characterization
SEM image of 200nm BaTiO3 single crystal patterns on (100) SrRuO3/SrTiO3 substrate. The pattern exhibits truncated-pyramid morphology with uniform orientation with respect to the single crystal substrate.
Selected Research Highlights:
Molecular Beam Epitaxy of Ferroic and Multiferroic Thin Films
Ji Cheng, G. Sterbinsky, B. W. Wessels, Sujing Xie and Vinayak P. Dravid
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Mixed Metal Oxide Chalcogenides
Evan Stampler , Kenneth Poeppelmeier
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Electrical Conductivity of Polymorphic Indium Tin Oxide Nanocrystalline Powders
Kyung-Han Seo, Joon-Hyung Lee, Jeong-Joo Kim, M. I. Bertoni, B. J. Ingram, T. O. Mason
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Multiferroic Multilayer Thin Film Strategy
G. Sterbinsky, J. Cheng and B. W. Wessels
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