He Zhang, Mingwei Zhang, Le Xin, Xianxin Zhang, Jiwei Zhai
{"title":"升温速率对铁电-介电复合陶瓷离子扩散及介电性能的影响","authors":"He Zhang, Mingwei Zhang, Le Xin, Xianxin Zhang, Jiwei Zhai","doi":"10.1007/s10832-023-00338-6","DOIUrl":null,"url":null,"abstract":"<div><p>The ion diffusion phenomenon in ferroelectric-dielectric composite ceramics will deteriorate its dielectric properties. In this paper, Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>-CuGa<sub>2</sub>O<sub>4</sub> composite ceramics were prepared at different sintering heating rates. The phase composition, microstructure and dielectric properties were tested and analyzed. The effects of grain growth and the different degrees of ion diffusion on the properties of ferroelectric-dielectric composite ceramics at various heating rates were studied. The results show two crystal phases including perovskite structure BST and spinel structure GuGa<sub>2</sub>O<sub>4</sub> in the composite ceramics. With the increase of the heating rate, the dielectric permittivity decreased, the tunability showed a decreasing trend, and the Q value also appeared to decrease after a slight increase. The inhomogeneity of grain size is apparent when the heating rate is higher. Moreover, as the grain size heterogeneity increases, the density decreases, adversely affecting the dielectric property of the samples.</p></div>","PeriodicalId":625,"journal":{"name":"Journal of Electroceramics","volume":"51 4","pages":"299 - 307"},"PeriodicalIF":1.7000,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of heating rate on ion diffusion and dielectric properties of ferroelectric-dielectric composite ceramics\",\"authors\":\"He Zhang, Mingwei Zhang, Le Xin, Xianxin Zhang, Jiwei Zhai\",\"doi\":\"10.1007/s10832-023-00338-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The ion diffusion phenomenon in ferroelectric-dielectric composite ceramics will deteriorate its dielectric properties. In this paper, Ba<sub>0.5</sub>Sr<sub>0.5</sub>TiO<sub>3</sub>-CuGa<sub>2</sub>O<sub>4</sub> composite ceramics were prepared at different sintering heating rates. The phase composition, microstructure and dielectric properties were tested and analyzed. The effects of grain growth and the different degrees of ion diffusion on the properties of ferroelectric-dielectric composite ceramics at various heating rates were studied. The results show two crystal phases including perovskite structure BST and spinel structure GuGa<sub>2</sub>O<sub>4</sub> in the composite ceramics. With the increase of the heating rate, the dielectric permittivity decreased, the tunability showed a decreasing trend, and the Q value also appeared to decrease after a slight increase. The inhomogeneity of grain size is apparent when the heating rate is higher. Moreover, as the grain size heterogeneity increases, the density decreases, adversely affecting the dielectric property of the samples.</p></div>\",\"PeriodicalId\":625,\"journal\":{\"name\":\"Journal of Electroceramics\",\"volume\":\"51 4\",\"pages\":\"299 - 307\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2023-11-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Electroceramics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10832-023-00338-6\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electroceramics","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10832-023-00338-6","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Effect of heating rate on ion diffusion and dielectric properties of ferroelectric-dielectric composite ceramics
The ion diffusion phenomenon in ferroelectric-dielectric composite ceramics will deteriorate its dielectric properties. In this paper, Ba0.5Sr0.5TiO3-CuGa2O4 composite ceramics were prepared at different sintering heating rates. The phase composition, microstructure and dielectric properties were tested and analyzed. The effects of grain growth and the different degrees of ion diffusion on the properties of ferroelectric-dielectric composite ceramics at various heating rates were studied. The results show two crystal phases including perovskite structure BST and spinel structure GuGa2O4 in the composite ceramics. With the increase of the heating rate, the dielectric permittivity decreased, the tunability showed a decreasing trend, and the Q value also appeared to decrease after a slight increase. The inhomogeneity of grain size is apparent when the heating rate is higher. Moreover, as the grain size heterogeneity increases, the density decreases, adversely affecting the dielectric property of the samples.
期刊介绍：
While ceramics have traditionally been admired for their mechanical, chemical and thermal stability, their unique electrical, optical and magnetic properties have become of increasing importance in many key technologies including communications, energy conversion and storage, electronics and automation. Electroceramics benefit greatly from their versatility in properties including:
-insulating to metallic and fast ion conductivity
-piezo-, ferro-, and pyro-electricity
-electro- and nonlinear optical properties
-feromagnetism.
When combined with thermal, mechanical, and chemical stability, these properties often render them the materials of choice.
The Journal of Electroceramics is dedicated to providing a forum of discussion cutting across issues in electrical, optical, and magnetic ceramics. Driven by the need for miniaturization, cost, and enhanced functionality, the field of electroceramics is growing rapidly in many new directions. The Journal encourages discussions of resultant trends concerning silicon-electroceramic integration, nanotechnology, ceramic-polymer composites, grain boundary and defect engineering, etc.
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