Fabrication of high-performance Ba0.95Ca0.05Ti0.85Zr0.15O3 ceramics by aqueous chemical coating method

The properties of Al2O3 coated fine‐grain temperature stable BaTiO3‐based ceramics sintered in reducing atmosphere

“…Firstly, ambient temperature measurements of electric properties found that the sample with Al 2 O 3 coating exhibits a higher insulation resistivity, a higher relative permittivity and a lower dielectric loss (see Table ). The result of enhanced relative permittivity with Al 2 O 3 coating, which is consistent with the published, may be attributed to the ionic radii difference between Al (0.535 Å, CN = 6) and Ti (0.745 Å, CN = 6) resulting into higher TiO 6 octahedral distortion . What we then concern is the DC breakdown strength that is one of the key characteristics measuring the performance of the material.…”