{"title":"溶胶-凝胶辅助自旋镀膜技术合成钛酸锶钙薄膜的频率相关介电性能和高能存储性能","authors":"Parthiban Palani, Didier Fasquelle","doi":"10.1007/s10971-025-06858-7","DOIUrl":null,"url":null,"abstract":"<div><p>This study employed the sol-gel assisted spin coating method to prepare strontium calcium titanate thin films with Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> composition. XRD and AFM were used to characterize the phase formation and crystallite size and the grain size and surface roughness, respectively. The XRD pattern revealed an orthorhombic phase with an average crystallite size of 47 nm. The root-mean-square (R<sub>q</sub>) and average roughness (R<sub>a</sub>) values were 7.5 nm and 5.9 nm, respectively. Furthermore, the thin film exhibited a quite stable dielectric permittivity (ε′) ≈ 186 over a wide frequency range between 100 Hz and 1 MHz with 5% frequency dispersion. The dielectric loss tangent (tanδ) remained lower than 0.5 between 100 Hz and 1 MHz. The polarization cycle revealed a very high energy recovery density (U<sub>e</sub>) of 120 J/cm<sup>3</sup> under an applied field of 6000 kV/cm. These results demonstrate the high interest in Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> oxide for electrostatic energy storage applications and its exceptional resistance to breakdown.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"115 2","pages":"835 - 843"},"PeriodicalIF":3.2000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Frequency-dependent dielectric properties and high-energy storage performance of strontium calcium titanate thin films synthesized via sol-gel-assisted spin coating technique\",\"authors\":\"Parthiban Palani, Didier Fasquelle\",\"doi\":\"10.1007/s10971-025-06858-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study employed the sol-gel assisted spin coating method to prepare strontium calcium titanate thin films with Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> composition. XRD and AFM were used to characterize the phase formation and crystallite size and the grain size and surface roughness, respectively. The XRD pattern revealed an orthorhombic phase with an average crystallite size of 47 nm. The root-mean-square (R<sub>q</sub>) and average roughness (R<sub>a</sub>) values were 7.5 nm and 5.9 nm, respectively. Furthermore, the thin film exhibited a quite stable dielectric permittivity (ε′) ≈ 186 over a wide frequency range between 100 Hz and 1 MHz with 5% frequency dispersion. The dielectric loss tangent (tanδ) remained lower than 0.5 between 100 Hz and 1 MHz. The polarization cycle revealed a very high energy recovery density (U<sub>e</sub>) of 120 J/cm<sup>3</sup> under an applied field of 6000 kV/cm. These results demonstrate the high interest in Sr<sub>0.62</sub>Ca<sub>0.38</sub>TiO<sub>3</sub> oxide for electrostatic energy storage applications and its exceptional resistance to breakdown.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"115 2\",\"pages\":\"835 - 843\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-025-06858-7\",\"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 Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-025-06858-7","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}
Frequency-dependent dielectric properties and high-energy storage performance of strontium calcium titanate thin films synthesized via sol-gel-assisted spin coating technique
This study employed the sol-gel assisted spin coating method to prepare strontium calcium titanate thin films with Sr0.62Ca0.38TiO3 composition. XRD and AFM were used to characterize the phase formation and crystallite size and the grain size and surface roughness, respectively. The XRD pattern revealed an orthorhombic phase with an average crystallite size of 47 nm. The root-mean-square (Rq) and average roughness (Ra) values were 7.5 nm and 5.9 nm, respectively. Furthermore, the thin film exhibited a quite stable dielectric permittivity (ε′) ≈ 186 over a wide frequency range between 100 Hz and 1 MHz with 5% frequency dispersion. The dielectric loss tangent (tanδ) remained lower than 0.5 between 100 Hz and 1 MHz. The polarization cycle revealed a very high energy recovery density (Ue) of 120 J/cm3 under an applied field of 6000 kV/cm. These results demonstrate the high interest in Sr0.62Ca0.38TiO3 oxide for electrostatic energy storage applications and its exceptional resistance to breakdown.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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