{"title":"介电响应、非欧姆行为和湿度感应特性:钛酸钇铜钠陶瓷中的锡掺杂","authors":"Jutapol Jumpatam, Kaniknun Sreejivungsa, Choojit Sarapak, Poemyot Wongbua-Ngam, Bundit Putasaeng, Prasit Thongbai","doi":"10.1016/j.ceramint.2024.09.115","DOIUrl":null,"url":null,"abstract":"<p>The impact of tin (Sn<sup>4+</sup>) doping on sodium yttrium copper titanate (Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>) ceramics, prepared using a conventional mixed-oxide route, was thoroughly investigated in terms of microstructure, dielectric properties, electrical response, non-linear behaviors, and humidity-sensing characteristics. All sintered ceramics showed a dense micro-structure and a pure Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> phase without any secondary phases. The doped Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4−x</sub>Sn<sub>x</sub>O<sub>12</sub> ceramics, with x = 0.05, demonstrated excellent dielectric properties, including a low dielectric loss tangent (∼0.032) and a giant dielectric permittivity (∼1.8 × 10<sup>4</sup>) across a wide temperature range. Sn<sup>4+</sup> doping improved the non-linear behaviors at 25°C in Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>, with a reduced dielectric loss tangent corresponding to an enhanced grain boundary (GB) response. The colossal dielectric response is attributed to the internal barrier layer capacitor model, which relates to the Schottky barrier height (Φ<sub>B</sub>) at the GBs. Notably, the Φ<sub>B</sub> values for the Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> ceramic increased with Sn<sup>4+</sup> ion doping. Additionally, an in-depth study of the humidity-sensing properties of the Sn<sup>4+</sup>-doped Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> material revealed that the capacitance at 1 kHz increased with increasing relative humidity levels, from 30% to 90%, suggesting potential applications in humidity-sensing technologies.</p>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dielectric Response, Non-Ohmic Behaviors and Humidity-sensing Characteristics: Tin Doping in Sodium Yttrium Copper Titanate Ceramics\",\"authors\":\"Jutapol Jumpatam, Kaniknun Sreejivungsa, Choojit Sarapak, Poemyot Wongbua-Ngam, Bundit Putasaeng, Prasit Thongbai\",\"doi\":\"10.1016/j.ceramint.2024.09.115\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The impact of tin (Sn<sup>4+</sup>) doping on sodium yttrium copper titanate (Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>) ceramics, prepared using a conventional mixed-oxide route, was thoroughly investigated in terms of microstructure, dielectric properties, electrical response, non-linear behaviors, and humidity-sensing characteristics. All sintered ceramics showed a dense micro-structure and a pure Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> phase without any secondary phases. The doped Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4−x</sub>Sn<sub>x</sub>O<sub>12</sub> ceramics, with x = 0.05, demonstrated excellent dielectric properties, including a low dielectric loss tangent (∼0.032) and a giant dielectric permittivity (∼1.8 × 10<sup>4</sup>) across a wide temperature range. Sn<sup>4+</sup> doping improved the non-linear behaviors at 25°C in Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub>, with a reduced dielectric loss tangent corresponding to an enhanced grain boundary (GB) response. The colossal dielectric response is attributed to the internal barrier layer capacitor model, which relates to the Schottky barrier height (Φ<sub>B</sub>) at the GBs. Notably, the Φ<sub>B</sub> values for the Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> ceramic increased with Sn<sup>4+</sup> ion doping. Additionally, an in-depth study of the humidity-sensing properties of the Sn<sup>4+</sup>-doped Na<sub>0.5</sub>Y<sub>0.5</sub>Cu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> material revealed that the capacitance at 1 kHz increased with increasing relative humidity levels, from 30% to 90%, suggesting potential applications in humidity-sensing technologies.</p>\",\"PeriodicalId\":267,\"journal\":{\"name\":\"Ceramics International\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.1000,\"publicationDate\":\"2024-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ceramics International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.ceramint.2024.09.115\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.ceramint.2024.09.115","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Dielectric Response, Non-Ohmic Behaviors and Humidity-sensing Characteristics: Tin Doping in Sodium Yttrium Copper Titanate Ceramics
The impact of tin (Sn4+) doping on sodium yttrium copper titanate (Na0.5Y0.5Cu3Ti4O12) ceramics, prepared using a conventional mixed-oxide route, was thoroughly investigated in terms of microstructure, dielectric properties, electrical response, non-linear behaviors, and humidity-sensing characteristics. All sintered ceramics showed a dense micro-structure and a pure Na0.5Y0.5Cu3Ti4O12 phase without any secondary phases. The doped Na0.5Y0.5Cu3Ti4−xSnxO12 ceramics, with x = 0.05, demonstrated excellent dielectric properties, including a low dielectric loss tangent (∼0.032) and a giant dielectric permittivity (∼1.8 × 104) across a wide temperature range. Sn4+ doping improved the non-linear behaviors at 25°C in Na0.5Y0.5Cu3Ti4O12, with a reduced dielectric loss tangent corresponding to an enhanced grain boundary (GB) response. The colossal dielectric response is attributed to the internal barrier layer capacitor model, which relates to the Schottky barrier height (ΦB) at the GBs. Notably, the ΦB values for the Na0.5Y0.5Cu3Ti4O12 ceramic increased with Sn4+ ion doping. Additionally, an in-depth study of the humidity-sensing properties of the Sn4+-doped Na0.5Y0.5Cu3Ti4O12 material revealed that the capacitance at 1 kHz increased with increasing relative humidity levels, from 30% to 90%, suggesting potential applications in humidity-sensing technologies.
期刊介绍:
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.