Perovskite ferrite oxide thin-film epitaxialization
Abstract
?Drexel University will investigate the structural evolution that enables a selected simple (ABO3) perovskite oxide thin film material family to grow from the amorphous phase heteroepitaxially and with high quality, and in single-crystalline form. BiFeO3 is selected the basis for the proposed study since it is a particularly challenging material to grow in phase-pure form. Several ex situ and in situ techniques will be used to examine the stoichiometric / compositional, atomic structural, and electronic structural evolution of amorphous ternary oxide films as they crystallize on selected perovskite and other substrates. In parallel we will study how the dielectric permittivity and loss characteristics, and ferroelectric switching properties of epitaxial BiFeO3 and doped BiFeO3 evolve with deposition and annealing conditions, informed by the results of the complementary and well-integrated ex situ and in situ analyses. The proposed work will advance fundamental knowledge of thin film growth science specifically in the area of chemically complex inorganic thin materials that impact current- and next-generation spintronics, non-volatile memories that may utilize both electric dipolar and magnetic order degrees of freedom, frequency-agile electronics, ferroelectric varactors, and electro-optic devices, sensors, etc. In support of the ONR¹s C4ISR mission to "...achieve a dynamic environment where information processing, understanding, analysis, decision-making and execution are fully integrated into a warfighting system,..." the basic research products from this Discovery & Innovation project have the potential to be game-changing through science that may enable direct integration of high functional density thin film materials with conventional platforms and associated technologies, with significant potential impact, e.g., on collecting, processing and distributing data, and redistributing and reallocating sensors in the battlespace.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 20, 2016
- Source ID
- N000141512170
Entities
People
- Jonathan E Spanier
Organizations
- Drexel University
- Office of Naval Research
- United States Navy