Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9803357 | Journal of Alloys and Compounds | 2005 | 5 Pages |
Abstract
High phase purity BaZr0.75Hf0.25O3 (BZH) powders were synthesized from a solid-state reaction using stoichiometric BaCO3 (98%), ZrO2 (98.5%), and HfO2 (98%) powders. The probable reaction pathways were elucidated employing simultaneous thermogravimetry analysis and differential scanning calorimetry (TGA and DSC). The phase variations in compounds heated at different temperatures were also analyzed by X-ray diffraction (XRD). The microstructures and composition of the powders and ceramics were measured and confirmed by TEM and SEM. The dielectric constant was greatly suppressed and low loss was obtained under a dc electric field. At the temperature range of â200 â¼Â 120 °C, the tunability and the figure of merit (K) are 15.5 â¼Â 17% and 35 â¼Â 55, respectively.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
H.Y. Tian, D.Y. Wang, J.Q. Qi, Y. Wang, H.L.W. Chan, C.L. Choy,