Simin Huang, Yiqian Yin, Yanhan Zhu, Kun Liang, Pavel Diko, Monika Radusovska, Xin Yao
{"title":"Behavior and effect of natural refinement of Sm2BaCuO5 derived from homogeneous nucleation catastrophe in bulks","authors":"Simin Huang, Yiqian Yin, Yanhan Zhu, Kun Liang, Pavel Diko, Monika Radusovska, Xin Yao","doi":"10.1111/jace.20011","DOIUrl":null,"url":null,"abstract":"<p>Among the REBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (REBCO or RE123, RE = rare earth element) family, SmBCO is preferably used in top-seeded melt-growth (TSMG) because of its outstanding property and more controllable stoichiometry 123. Nevertheless, the refinement of Sm<sub>2</sub>BaCuO<sub>5</sub> (Sm211) particles has been challenging for high-performance SmBCO bulks. Conventional precursor powders (SmBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> plus Sm<sub>2</sub>BaCuO<sub>5</sub>) intrinsically result in enlarging Sm<sub>2</sub>BaCuO<sub>5</sub> particles due to their coarsening and epitaxial growth during the heating process. Here, we used modified precursor powders (MPPs, Sm<sub>2</sub>O<sub>3</sub> plus Ba<sub>2</sub>Cu<sub>3</sub>O<sub>5</sub>) in air-processed TSMG, in which there is neither Sm211 in the beginning nor related enlargement during heating. Consequently, the nucleation catastrophe of Sm211 occurred above the peritectic temperature, which in situ formed, possessing naturally small size. Further, aiming to suppress the Sm/Ba substitution, Ba-rich MPP, substituting Ba<sub>2</sub>Cu<sub>3</sub>O<sub>5</sub> with Ba<sub>3</sub>Cu<sub>4</sub>O<sub>7</sub>) was employed, producing an excellent SmBCO bulk with a diameter of 24 mm: levitation force of 51.5 N and trapped field of 0.537 T. Optical micrographs and quantitative analyses confirmed the superior refinement and distribution of Sm211 particles in SmBCO bulks. Most importantly, new strategies in this work are widely applicable for developing cost-effective and high-performance other REBCO bulk superconductors.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20011","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Among the REBa2Cu3O7-δ (REBCO or RE123, RE = rare earth element) family, SmBCO is preferably used in top-seeded melt-growth (TSMG) because of its outstanding property and more controllable stoichiometry 123. Nevertheless, the refinement of Sm2BaCuO5 (Sm211) particles has been challenging for high-performance SmBCO bulks. Conventional precursor powders (SmBa2Cu3O7-δ plus Sm2BaCuO5) intrinsically result in enlarging Sm2BaCuO5 particles due to their coarsening and epitaxial growth during the heating process. Here, we used modified precursor powders (MPPs, Sm2O3 plus Ba2Cu3O5) in air-processed TSMG, in which there is neither Sm211 in the beginning nor related enlargement during heating. Consequently, the nucleation catastrophe of Sm211 occurred above the peritectic temperature, which in situ formed, possessing naturally small size. Further, aiming to suppress the Sm/Ba substitution, Ba-rich MPP, substituting Ba2Cu3O5 with Ba3Cu4O7) was employed, producing an excellent SmBCO bulk with a diameter of 24 mm: levitation force of 51.5 N and trapped field of 0.537 T. Optical micrographs and quantitative analyses confirmed the superior refinement and distribution of Sm211 particles in SmBCO bulks. Most importantly, new strategies in this work are widely applicable for developing cost-effective and high-performance other REBCO bulk superconductors.
期刊介绍:
The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
Papers on fundamental ceramic and glass science are welcome including those in the following areas:
Enabling materials for grand challenges[...]
Materials design, selection, synthesis and processing methods[...]
Characterization of compositions, structures, defects, and properties along with new methods [...]
Mechanisms, Theory, Modeling, and Simulation[...]
JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.