教師資料查詢 | 類別: 期刊論文 | 教師: 王啟銘 WANG, CHI-MING (瀏覽個人網頁)

標題:Preparation of the Bi1.8Pb0.4Ca2Sr2Cu3Oy Superconductor with a Citrate Precursor Method
學年82
學期2
出版(發表)日期1994/04/01
作品名稱Preparation of the Bi1.8Pb0.4Ca2Sr2Cu3Oy Superconductor with a Citrate Precursor Method
作品名稱(其他語言)以檸檬酸鹽先驅物法製備Bi1.8Pb0.4Ca2Sr2Cu3Oy超導體
著者Wei, T. P.; 王啟銘; Wang, C. M.; 高惠春; Kao, H. C. I.
單位淡江大學化學學系
出版者Maryland Heights: Academic Press
著錄名稱、卷期、頁數Journal of Solid State Chemistry 109(2), pp.227-230
摘要The Bi1.8Pb0.4Ca2Sr2Cu3Oy superconductor is prepared by a citrate precursor method. Nitrate salts of the constituent metals are dissolved in deionized water, and citric acid and ethylene glycol are added. The pH of the solution is adjusted to 6.8. The solution is then dried at 80°C, pyrolyzed at 200°C, calcined at 810°C, pressed into pellets and sintered at 860°C for 20 min, and lowered to 850°C for different periods and cooling in the furnace or quenching in the air. The highest Tc(zero) is 114 K, observed in a sample which is sintered for 24 hr and resintered for 96 hr with furnace cooling. The X-ray diffraction pattern shows that it contains 95% high Tc phase of Bi2-xPbxCa2Sr2Cu3Oy superconductor.
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語言英文
ISSN0022-4596
期刊性質國外
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