کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803357 | 1516465 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of BaZr0.75Hf0.25O3 by a solid-state reaction technique and characterizations of dielectric properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 402, Issues 1â2, 27 October 2005, Pages 251-255
Journal: Journal of Alloys and Compounds - Volume 402, Issues 1â2, 27 October 2005, Pages 251-255
نویسندگان
H.Y. Tian, D.Y. Wang, J.Q. Qi, Y. Wang, H.L.W. Chan, C.L. Choy,