Thermal activation energy on electrical degradation process in BaTiO₃ based multilayer ceramic capacitors for lifetime reliability.

ABSTRACT: For a high capacitance and high lifetime reliability of multilayer ceramic capacitors for automotive applications, the activation energy on thermal activation process can typically be calculated by using Arrhenius based Prokopowicz-Vaskas equation as a method for lifetime prediction. In this study, it is clearly observed that the activation energy shows to be constant in the range of ~ 1.5 eV for the prototype MLCCs, higher than the activation energy values of ~ 1.0 eV related to the motion or diffusion of oxygen vacancies reported in the previous literature. The activation energy value of ~ 1.5 eV for three prototype MLCCs is close to a half the energy band gap (E_g/2 ≈ 1.6 eV) of BaTiO₃ obtained from specific environment, where oxygen vacancies are stabilized by exte

SUBMITTER: Chun J 

PROVIDER: S-EPMC10770127 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature