| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Mesoscale Phenomena in Functional Polycrystals and Their Nanostructures
|
| Presentation Title |
Synthesis, Processing, and Properties of High Performance Lead Free Electro-optic Ceramics |
| Author(s) |
Alexander D. Dupuy, Yasuhiro Kodera, Javier E Garay |
| On-Site Speaker (Planned) |
Alexander D. Dupuy |
| Abstract Scope |
Electro-optic (EO) materials allow for the precise control of light using electrical signals, which is crucial for a number of photonic technologies. Composition limitations in electro-optic single crystals make bulk polycrystalline ceramics attractive for exploring new electro-optic compositions. Here we explore the ferroelectric, optical, and EO properties of bulk polycrystalline lead-free (1-x)Ba(Zr0.2Ti0.8)O3-x(Ba0.7Ca0.3)TiO3 (referred to as BZT-BCT or BXT) ceramics. We demonstrate that powder synthesis and densification strategies can be modified to reduce optical scattering and significantly improve transparency, allowing for viable EO ceramics. These densified ceramics exhibit a unique electric field induced phase transformation, resulting in EO properties that are comparable or superior to modern state of the art EO materials. Finally, we establish how processing and grain size can be used to tailor the optical and EO properties, greatly expanding the engineering design flexibility of EO devices. |