| Autor: |
Huang, Chong Qing, Mei, X.A., Chen, M., Li, B. |
| Zdroj: |
Key Engineering Materials; November 2014, Vol. 633 Issue: 1 p366-369, 4p |
| Abstrakt: |
The electrical properties of Dy-doped bismuth titanate,Bi4-xDyxTi3O12 (BDT) ceramics prepared by a conventional electroceramic technique were investigated. XRD analyses revealed Bi-layered perovskite structure in all samples. SEM micrographs showed randomly oriented and plate-like morphology. For the samples with x=0.25 and 1.0 the current-voltage characteristics exhibited negative differential resistance behaviors and their P-V hysteresis loops were characterized by large leakage current, whereas for the samples with x=0.5 and 0.75 the current-voltage characteristics showed simple ohmic behaviors and their P-E hysteresis loops were the saturated and undistorted hysteresis loops. The remanent polarization ( Pr ) and coercive field (Ec) of the BDT ceramic with x=0.75 were above 16μC/cm2 and 75KV/cm , respectively. |
| Databáze: |
Supplemental Index |
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