松弛剂Ba0.85Ca0.15Zr0.05Ti0.95O3无铅陶瓷的相变行为和电学性能研究

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2019-06-28 DOI:10.1080/07315171.2019.1647705

Mamta Shandilya, S. Thakur, R. Rai

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引用次数: 12

摘要

摘要采用水热法制备了无铅弛豫铁电材料Ba0.85Ca0.15Zr0.05Ti0.95O3。单相x射线衍射图与钙钛矿结构非常接近，样品在室温下具有四方结构的相。Ba0.85Ca0.15Zr0.05Ti0.95O3粉末的FESEM图像显示圆柱形晶体。平均粒径为~ 10±5 nm的小颗粒均匀分布在粉末中。透射电镜中衍射最强烈的环对应于大的晶体。广泛的介电异常与频率增加的介电最大值相结合，表明系统中存在二阶扩散相变。

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Study of phase transitional behavior and electrical properties of relaxor Ba0.85Ca0.15Zr0.05Ti0.95O3 lead free ceramic

Abstract Lead-free relaxor ferroelectric, Ba0.85Ca0.15Zr0.05Ti0.95O3 have been fabricated by a hydrothermal method. Single-phase X-ray diffraction patterns conforms very closely to perovskites structure and the samples have a phase with a tetragonal structure at room temperature. The FESEM image of Ba0.85Ca0.15Zr0.05Ti0.95O3 powder shows cylindrical like crystals. Small grains with average grain sizes of ∼10 ± 5 nm uniformly distributed all over the powder. The most intense diffraction rings from TEM correspond to large crystallites. A broad dielectric anomaly coupled with the dielectric maxima with increasing frequency indicates the second order diffuse phase transition in the system.

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.