2D layered multiferroic oxide systems with tunable electromagnetic properties
Abstract
The Goal of this proposal is to design new and novel layered oxide phases with tunable physical properties including magnetic, ferroelectric, and optical properties. This study will enable the fundamental understanding of the layered oxide interfaces, phase change properties and strain driven phenomena, and to allow the true power of novel oxide optics and electronics to be realized. The proposed research builds upon our recent success in designing and processing a new family of layered oxide structures with coexistence of ferroelectric and ferromagnetic properties (i.e., multiferroics), and recently highly anisotropic optical dielectric functions and highly tunable physical properties demonstrated. The key hypothesis of the work lies in the following: (1) theunique phase change nature of the ferroelectric 2D layered oxides with abrupt property switching allows novel designs of switching electronic and optical devices; (2) the highly anisotropic nature of the 2D layered oxide systems can be further tuned via external stimulus such as electric bias, mechanical bending and thermal fluctuation. Thus achieving highly anisotropic and highly tunableswitching materials is possible using the 2D layered oxide systems.The main research objectives/tasks are designed as follows:1) To achieve tunable physical properties in novel layered supercell structures via materials designs; (Years 1-2) 2) To demonstrate dynamic tuning of phase change properties and complex dielectric functions in multiferroic layered oxides; (Years 1-2); 3) To integrate 2D layered oxides on Mica substrate for tunable physical properties via bending (Years 2-3); 4) To explore thermal effects on phase change properties in layered oxide towards future stochastic computing (Years 2-3). The impacts of the research are many-fold: (1) the new 2D layered oxide material designs will greatly enrich the material design and selections for ferroelectrics, magnetoelectrics, non-linear optics and waveguides, and many others to be discovered; (2) the enabled tunability through various approaches will enable dynamic phase change property tuning and lead to various tunableelectrotonic and optics designs ; (3) the technological impacts of the work are enormous given the unlimited possibilities of new layered structure designs and the new dynamic tunable functionalities beyond expectation.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 17, 2020
- Source ID
- N000142012600
Entities
People
- Haiyan Wang
Organizations
- Office of Naval Research
- United States Navy
- University of Virginia