|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||2022 Technical Division Student Poster Contest
||SPU-3: Investigation of Nanoparticle Size Effects on the Dielectric Properties of Functionalized Barium Titanate
||Evan Flitz, Emma Cooper, Eduardo De Anda, Halie Kim, Zoe Kedzierski, Albert Dato, Todd Monson
|On-Site Speaker (Planned)
Barium Titanate (BTO) is a ferroelectric perovskite material that is widely studied and commonly used in state-of-the-art capacitors due to its high dielectric permittivity. This value is generally understood to be ~5000. However, it has been reported that BTO exhibits a sharp increase in dielectric constant to over 15000 at a particle size of 70 nm, which is intriguing yet highly contested. Here we present an investigation of the dielectric constant of BTO across six particle sizes between 50 nm and 500 nm. Surface-functionalized BTO nanoparticles were incorporated into an ABS polymer matrix at high volume loadings with low agglomeration, and subsequently injection molded. The dielectric constant of BTO was extracted from the matrix by fabricating the composites into dielectric parallel plate capacitors. These results may prove valuable towards the development of improved systems of energy storage and power conditioning to meet the rising demands of society.
||Energy Conversion and Storage, Polymers,