Investigating the dielectric constant of barium titanate in a polymer-matrix nanocomposite
- Harvey Mudd College, Claremont, CA (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Barium titanate (BTO) is a ferroelectric material used in capacitors because of its high bulk dielectric constant. However, the impact of the size of BTO on its dielectric constant is not yet fully understood and is highly contested. Here, we present an investigation into the dielectric constant of BTO nanoparticles with diameters ranging between 50 and 500 nm. BTO nanoparticles were incorporated into acrylonitrile butadiene styrene and injection molded into parallel plate capacitors, which were used to determine nanocomposite dielectric constants. The dielectric constants of BTO nanoparticles were obtained by combining experimental measurements with computational results from COMSOL simulations of ABS-matrix nanocomposites containing BTO. The dielectric constant of BTO was observed to be relatively constant at nanoparticle diameters as small as 200 nm but sharply declined at smaller nanoparticle sizes. Overall, these results will be useful in the development of improved energy storage and power conditioning systems utilizing BTO nanoparticles.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC); National Science Foundation (NSF)
- Grant/Contract Number:
- NA0003525
- OSTI ID:
- 1882637
- Report Number(s):
- SAND2022-10851J; 709000
- Journal Information:
- MRS Advances, Journal Name: MRS Advances Journal Issue: 31 Vol. 7; ISSN 2059-8521
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English