Microstructure Optimization via Grain‐Boundary Segregation to Enhance DC Bias Dielectric Performance of BaTiO 3 Multilayer Ceramic Capacitors (Adv. Mater. 1/2026)
Abstract
Interface Segregation in Dielectrics In their Research Article (DOI: 10.1002/adma.202507233), Sung-Yoon Chung and co-workers overturn the long-standing reliance on multiple additives and costly rare-earth elements in MLCCs by demonstrating that a single acceptor-type additive enables superior dielectric performance. Through atomic-scale grain-boundary segregation in nanocrystalline BaTiO3, they achieve dielectric loss below 0.8% up to 100 MHz and under 2.5% up to 1 GHz, while maintaining high effective permittivity even under electric fields as high as 80 kV/cm and exhibiting excellent temperature stability.
Fields of Study & Subjects
Ferroelectric and Piezoelectric Materials
Dielectric properties of ceramics
Dielectric materials and actuators
Publication details
- Journal / source
- Advanced Materials
- Publisher
- Wiley
- Volume
- 38
- Issue
- 1
- Publication date
- 1 January 2026
- Language
- EN