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- Title
The colossal permittivity effect on BaTiO<sub>3</sub> induced by different sinter atmosphere.
- Authors
Xu, Kun; Zhu, Guisheng; Xu, Huarui; Zhao, Yunyun; Jiang, Kunpeng; Zhang, Xiuyun; Yin, Hao; Shangguan, Mingnan; Wan, Le; Huang, Tao
- Abstract
BaTiO3 sintered in different atmospheres to tune the oxygen-related defect configuration in BaTiO3. X-ray photoelectron spectroscopy (XPS) found that BaTiO3 sintered in different atmospheres has different defect compensation modes: BaTiO3 sintered in 100% Ar atmosphere mainly has V o · · - V Ba ″ ion compensation mode; BaTiO3 sintered in 1% H2&99% Ar atmosphere mainly has V o · · - 2 T i Ti ′ electron compensation mode. The effects of V o · · - V Ba ″ and V o · · - 2 T i Ti ′ defect configurations on the morphology, structure, and properties of BaTiO3 ceramics were studied. Benefiting from the ion-free doping approach, we report the V o · · - 2 T i Ti ′ defect configuration has a colossal permittivity effect (εr > 3.8 × 105,25℃ ~ 150℃, its 47 times than BaTiO3's εr) and low dielectric loss (tanδ < 0.1) at low frequency for the first time. These results provides an effective strategy to the design of super high-capacity multilayer ceramic capacitors (MLCCs).
- Subjects
CERAMIC capacitors; PERMITTIVITY; DIELECTRIC loss; TRAVERTINE; X-ray photoelectron spectroscopy; ATMOSPHERE
- Publication
Applied Physics A: Materials Science & Processing, 2022, Vol 128, Issue 12, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-022-06201-9