Preparation of BST Powders and Ceramics via a Hybrid Method

IF 0.7 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Integrated Ferroelectrics Pub Date : 2023-09-29 DOI:10.1080/10584587.2023.2234571

Thanawat Klaytae, Naratip Vittayakorn, Rattiphorn Sumang

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Abstract

AbstractBarium strontium titanate (Ba0.8Sr0.2TiO3; BST) ceramics, were prepared by the hybrid method between Solid-state reaction (SSR) and Sol-gel methods (SG) in a ratio of 1:0.1–1:0.5. The BST powder was successfully calcined at 850 °C for 2 h. This temperature is much lower than the calcination temperatures of the SSR method. The BST ceramics were sintered between 1150 and 1450 °C. All samples showed the pure perovskite structure corresponding to JCPDS no. 34-0411. The optimum sintering temperature was observed from the samples sintered at 1450 °C for 4 h, indicating a density of 5.26 g/cm3, dielectric constant of 7018, and ferroelectric properties: (Pmax = 13.8 μC/cm2, Pr = 2.5 μC/cm2 and Ec = 2.3 kV/cm at 30 kV/cm).Keywords: Phase transitionmicrostructureferroelectrichybrid method AcknowledgmentsThe authors thank the Program of Physics, Faculty of Science and Technology, Pibulsongkram Rajabhat University for supporting facilities.Disclosure StatementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was funded by Pibulsongkram Rajabhat University, grant number RDI-2-61-14. This work received the best poster award from the International Conference and Exhibition on Science, Technology and Engineering of Materials [ISTEM2022].

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杂化法制备BST粉体及陶瓷

钛酸锶钡(Ba0.8Sr0.2TiO3;采用固态反应(SSR)法和溶胶-凝胶法(SG)，以1:0.1 ~ 1:0.5的比例混合制备BST陶瓷。BST粉末在850℃下成功煅烧2 h，该温度远低于SSR方法的煅烧温度。BST陶瓷在1150 ~ 1450℃之间烧结。所有样品均显示纯钙钛矿结构，符合JCPDS no。34 - 0411。最佳烧结温度为1450℃，烧结时间为4 h，烧结密度为5.26 g/cm3，介电常数为7018，铁电性能为(Pmax = 13.8 μC/cm2, Pr = 2.5 μC/cm2, Ec = 2.3 kV/cm)。关键词:相变微观结构参考电混合方法致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢披露声明作者未报告潜在的利益冲突。本研究由Pibulsongkram Rajabhat大学资助，授权号RDI-2-61-14。该作品获得了国际材料科学、技术和工程会议和展览[ISTEM2022]的最佳海报奖。

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来源期刊

Integrated Ferroelectrics 工程技术-工程：电子与电气

CiteScore

1.40

自引率

0.00%

发文量

179

审稿时长

3 months

期刊介绍： Integrated Ferroelectrics provides an international, interdisciplinary forum for electronic engineers and physicists as well as process and systems engineers, ceramicists, and chemists who are involved in research, design, development, manufacturing and utilization of integrated ferroelectric devices. Such devices unite ferroelectric films and semiconductor integrated circuit chips. The result is a new family of electronic devices, which combine the unique nonvolatile memory, pyroelectric, piezoelectric, photorefractive, radiation-hard, acoustic and/or dielectric properties of ferroelectric materials with the dynamic memory, logic and/or amplification properties and miniaturization and low-cost advantages of semiconductor i.c. technology.