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Giant dielectric properties of CaCu3Ti4O12∕(Li,Ti)-doped NiO composites subjected to postsintering annealing and compressive stress
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We report the effects of postsintering annealing in argon and compressive prestress on the giant dielectric properties of CaCu3Ti4O12–Li0.3Ti0.02Ni0.68O composites in the frequency range from 100Hzto1MHz. After postsintering annealing, all compounds investigated still display a Debye-like relaxation, which can be interpreted based on the Maxwell–Wagner model. The dielectric behavior and the effect of compressive prestress of CaCu3Ti4O12 and CaCu3Ti4O12–Li0.3Ti0.02Ni0.68O after annealing are closely related to the oxygen vacancies in the grain boundaries.
Title: Giant dielectric properties of CaCu3Ti4O12∕(Li,Ti)-doped NiO composites subjected to postsintering annealing and compressive stress
Description:
We report the effects of postsintering annealing in argon and compressive prestress on the giant dielectric properties of CaCu3Ti4O12–Li0.
3Ti0.
02Ni0.
68O composites in the frequency range from 100Hzto1MHz.
After postsintering annealing, all compounds investigated still display a Debye-like relaxation, which can be interpreted based on the Maxwell–Wagner model.
The dielectric behavior and the effect of compressive prestress of CaCu3Ti4O12 and CaCu3Ti4O12–Li0.
3Ti0.
02Ni0.
68O after annealing are closely related to the oxygen vacancies in the grain boundaries.
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