Ba0.1Sr0.9Zr0.18Ti0.82O3 ceramics: dielectric properties and energy storage density under external electric field and temperature
In order to develop the application of energy storage ceramics, the dielectric properties and energy storage density of Ba0.1Sr0.9Zr0.18Ti0.82O3 ceramics (BSZT-118) prepared by the modified sol–gel process were researched under different temperatures under electric field. The results show that the dielectric constant of BSZT-118 is consistent with Johnson’s formula based on Devonshire phenomenological theory, and the anharmonic constant (α) increases as the temperature rises. The energy storage density of BSZT-118 is influenced by the electric field and temperature. With the increase in temperature, the storage density of BSZT decreases and the fluctuation of storage density increases under electric field. The conduction mechanism of BSZT-118 is mainly space charge-limited conduction (SCLC) below 60 °C, and it is mainly Ohmic conduction above 60 °C.
This work is supported by the National Natural Science Foundation of China under Grant No. u1601208.
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The manuscript is approved by all authors for publication and there is no conflict of interest exits in the submission of this manuscript.
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