{"title":"选定的高 TC 氧化物超导体的转变温度与公式质量:室温超导电性的阶跃闭合","authors":"Mahendra Prasad, A. M. Parmeswaran, Kaman Singh","doi":"10.1007/s40010-024-00889-5","DOIUrl":null,"url":null,"abstract":"<div><p>The transition temperature T<sub>c</sub> of the superconductor signals the onset of superconductivity. We were curious to see the variation of T<sub>c</sub> with the formula mass (F<sub>M</sub>) of well-studied high-T<sub>c</sub> oxide superconductors to observe whether there exists any correlation between T<sub>c</sub> and F<sub>M</sub> of these oxide superconductors. Interestingly, it is observed that the ratios of T<sub>c</sub> /F<sub>m</sub> of 8 different high-T<sub>c</sub> superconductors which exhibit transition temperature ≥ 90 K, converge to show a ratio of 0.136 with a 14% deviation. Other superconductors and bismuth-based which have T<sub>c</sub> less than 90 K differ significantly. Extrapolating the transition temperature to 25 °C, a formula mass F<sub>M</sub> of high-T<sub>c</sub> oxide superconductor turns to be 2239 with only 14% deviation in different materials which have T<sub>c</sub> ≥ 90 K. This means if oxide superconductors of formula mass 2239 are synthesized, then that materials could exhibit room-temperature superconductivity. The experimental work on YBCO superconductors is underway and results will be communicated essentially an extension of the present work.</p></div>","PeriodicalId":744,"journal":{"name":"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Transition Temperature versus Formula Mass of Selected High-TC Oxide Superconductors: A Step Closure to Room Temperature Superconductivity\",\"authors\":\"Mahendra Prasad, A. M. Parmeswaran, Kaman Singh\",\"doi\":\"10.1007/s40010-024-00889-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The transition temperature T<sub>c</sub> of the superconductor signals the onset of superconductivity. We were curious to see the variation of T<sub>c</sub> with the formula mass (F<sub>M</sub>) of well-studied high-T<sub>c</sub> oxide superconductors to observe whether there exists any correlation between T<sub>c</sub> and F<sub>M</sub> of these oxide superconductors. Interestingly, it is observed that the ratios of T<sub>c</sub> /F<sub>m</sub> of 8 different high-T<sub>c</sub> superconductors which exhibit transition temperature ≥ 90 K, converge to show a ratio of 0.136 with a 14% deviation. Other superconductors and bismuth-based which have T<sub>c</sub> less than 90 K differ significantly. Extrapolating the transition temperature to 25 °C, a formula mass F<sub>M</sub> of high-T<sub>c</sub> oxide superconductor turns to be 2239 with only 14% deviation in different materials which have T<sub>c</sub> ≥ 90 K. This means if oxide superconductors of formula mass 2239 are synthesized, then that materials could exhibit room-temperature superconductivity. The experimental work on YBCO superconductors is underway and results will be communicated essentially an extension of the present work.</p></div>\",\"PeriodicalId\":744,\"journal\":{\"name\":\"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences\",\"FirstCategoryId\":\"103\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40010-024-00889-5\",\"RegionNum\":4,\"RegionCategory\":\"综合性期刊\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MULTIDISCIPLINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences","FirstCategoryId":"103","ListUrlMain":"https://link.springer.com/article/10.1007/s40010-024-00889-5","RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
摘要
超导体的转变温度 Tc 标志着超导性的开始。我们很想了解 Tc 随经过深入研究的高锝氧化物超导体的公式质量 (FM) 的变化情况,以观察这些氧化物超导体的 Tc 和 FM 之间是否存在任何相关性。有趣的是,我们观察到 8 种不同高锝超导体的 Tc /Fm 比值趋于一致,它们的转变温度≥ 90 K,比值为 0.136,偏差为 14%。Tc 小于 90 K 的其他超导体和铋基超导体的比值相差很大。将转变温度推断到 25 °C,高锝氧化物超导体的式质量 FM 变为 2239,在 Tc ≥ 90 K 的不同材料中仅有 14% 的偏差。有关 YBCO 超导体的实验工作正在进行中,实验结果将作为本研究的延伸予以公布。
Transition Temperature versus Formula Mass of Selected High-TC Oxide Superconductors: A Step Closure to Room Temperature Superconductivity
The transition temperature Tc of the superconductor signals the onset of superconductivity. We were curious to see the variation of Tc with the formula mass (FM) of well-studied high-Tc oxide superconductors to observe whether there exists any correlation between Tc and FM of these oxide superconductors. Interestingly, it is observed that the ratios of Tc /Fm of 8 different high-Tc superconductors which exhibit transition temperature ≥ 90 K, converge to show a ratio of 0.136 with a 14% deviation. Other superconductors and bismuth-based which have Tc less than 90 K differ significantly. Extrapolating the transition temperature to 25 °C, a formula mass FM of high-Tc oxide superconductor turns to be 2239 with only 14% deviation in different materials which have Tc ≥ 90 K. This means if oxide superconductors of formula mass 2239 are synthesized, then that materials could exhibit room-temperature superconductivity. The experimental work on YBCO superconductors is underway and results will be communicated essentially an extension of the present work.