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Meeting MS&T22: Materials Science & Technology
Symposium ACerS Richard M. Fulrath Award Session
Presentation Title Elucidation of Dielectric Polarization Mechanism Using THz Spectroscopy
Author(s) Takuya Hoshina
On-Site Speaker (Planned) Takuya Hoshina
Abstract Scope Intrinsic dielectric properties of high-permittivity materials such as perovskite oxides are predominantly determined by the ionic polarizations related to the lattice vibrations (phonon). Therefore, it is necessary to measure the complex dielectric permittivity as a function of frequency in THz region to understand the origin of the intrinsic dielectric property. In this presentation, I will introduce THz dielectric spectra of typical dielectric and ferroelectric materials. Recently, we uniquely developed an ellipsometric system for determining THz dielectric functions of high-permittivity materials directly. We have been evaluating the complex permittivity of various materials using this system, and analyzing the vibration and diffusion of ions in solids with the aid of theoretical calculations. In addition to the polarization mechanism of typical perovskite-type oxides, I will introduce cation / anion substitution effects, size effect, design of novel materials, and so on.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing of Ceramics Using Preceramic Polymers
Advancing Solid State Reaction Science Through In Situ X-ray Diffraction and Processing Control
Design Paradigm for Sustainable Manufacturing of Ceramics by Analyzing Different Case Studies
Development of New Process for Mass-producing Nanoparticles and Industrialization of Quantum Dots Materials for Display
Development of Ultra-thin Piezoelectric Type Loudspeaker for Mobile Phones
Displays Having FETs with Crystalline Oxide Semiconductor Materials
Elucidation of Dielectric Polarization Mechanism Using THz Spectroscopy
Fabrication and Morphology Control of Advanced Glass-Ceramics for Next-generation All-Solid-State Batteries
Material Development for High Performance and Miniaturization of Multilayer Ceramic Capacitors by Using Sn

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