{"title":"Ca 主导 A 位钨青铜铁电陶瓷的结构、磁性和电性研究","authors":"Shristi Chaudhary, Sheela Devi, Shilpi Jindal","doi":"10.1007/s12034-024-03280-7","DOIUrl":null,"url":null,"abstract":"<div><p>Ba<sub>0.95</sub>Sr<sub>0.05</sub>Ca<sub>5</sub>Ti<sub>2</sub>Nb<sub>8</sub>O<sub>30</sub> sample was prepared by solid-state reaction technique to investigate structural, optical, magnetic and dielectric properties via performing different characterizations. XRD reveals the orthorhombic structure with Pbcn space group along with Rietveld refinement. Grain size of the bulk sample was carried out by SEM, which is 1.25μm. Then, microstructural correlated with optical by means of Raman, FTIR and PL spectroscopies. Raman studies reveal the presence of different modes along with band assignments. FTIR and PL studies reveal the bonding modes of A- and B-site atoms, which give the energy band gap around 2.969, 2.441 and 2.012 eV for different bond contributions. The magnetic property was carried out by VSM. The dielectric properties, as a function of frequency and temperature, were carried out and reveal that the bulk sample can be used as storage devices. The modulus spectroscopy was calculated from dielectric studies to analyse electrical properties.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An investigation of structural, magnetic and electrical properties of Ca dominant A-site tungsten bronze ferroelectric ceramic\",\"authors\":\"Shristi Chaudhary, Sheela Devi, Shilpi Jindal\",\"doi\":\"10.1007/s12034-024-03280-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ba<sub>0.95</sub>Sr<sub>0.05</sub>Ca<sub>5</sub>Ti<sub>2</sub>Nb<sub>8</sub>O<sub>30</sub> sample was prepared by solid-state reaction technique to investigate structural, optical, magnetic and dielectric properties via performing different characterizations. XRD reveals the orthorhombic structure with Pbcn space group along with Rietveld refinement. Grain size of the bulk sample was carried out by SEM, which is 1.25μm. Then, microstructural correlated with optical by means of Raman, FTIR and PL spectroscopies. Raman studies reveal the presence of different modes along with band assignments. FTIR and PL studies reveal the bonding modes of A- and B-site atoms, which give the energy band gap around 2.969, 2.441 and 2.012 eV for different bond contributions. The magnetic property was carried out by VSM. The dielectric properties, as a function of frequency and temperature, were carried out and reveal that the bulk sample can be used as storage devices. The modulus spectroscopy was calculated from dielectric studies to analyse electrical properties.</p></div>\",\"PeriodicalId\":502,\"journal\":{\"name\":\"Bulletin of Materials Science\",\"volume\":\"47 3\",\"pages\":\"\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-08-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12034-024-03280-7\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03280-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
通过固态反应技术制备了 Ba0.95Sr0.05Ca5Ti2Nb8O30 样品，并通过不同的表征方法研究了其结构、光学、磁学和介电特性。X 射线衍射显示出 Pbcn 空间群的正交菱形结构，并进行了里特维尔德细化。用扫描电子显微镜测量了块状样品的晶粒尺寸，为 1.25 微米。然后，通过拉曼光谱、傅立叶变换红外光谱和聚光光谱将微观结构与光学相关联。拉曼光谱研究显示了不同的模式和波段分布。傅立叶变换红外光谱和聚光光谱研究揭示了 A 位和 B 位原子的成键模式，从而得出不同成键贡献的能带隙分别约为 2.969、2.441 和 2.012 eV。磁性能是通过 VSM 测得的。介电性能是频率和温度的函数，结果表明块状样品可用作存储设备。根据介电研究计算出的模量光谱分析了电特性。
An investigation of structural, magnetic and electrical properties of Ca dominant A-site tungsten bronze ferroelectric ceramic
Ba0.95Sr0.05Ca5Ti2Nb8O30 sample was prepared by solid-state reaction technique to investigate structural, optical, magnetic and dielectric properties via performing different characterizations. XRD reveals the orthorhombic structure with Pbcn space group along with Rietveld refinement. Grain size of the bulk sample was carried out by SEM, which is 1.25μm. Then, microstructural correlated with optical by means of Raman, FTIR and PL spectroscopies. Raman studies reveal the presence of different modes along with band assignments. FTIR and PL studies reveal the bonding modes of A- and B-site atoms, which give the energy band gap around 2.969, 2.441 and 2.012 eV for different bond contributions. The magnetic property was carried out by VSM. The dielectric properties, as a function of frequency and temperature, were carried out and reveal that the bulk sample can be used as storage devices. The modulus spectroscopy was calculated from dielectric studies to analyse electrical properties.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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