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Phase and microstructure evolution in the process of the composite Bi-2212-(Sr, Ca)(3)Al(2)O(6) glass-ceramics formationстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Kazin P.E., Poltavets V.V., Ttretyakov Y.D., Jansen M., Freitag B., Mader W
- Журнал: Superconductor Science and Technology
- Том: 12
- Номер: 8
- Год издания: 1999
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 475
- Последняя страница: 480
- DOI: 10.1088/0953-2048/12/8/301
- Аннотация: Devitrification of glass with a cation ratio corresponding to the composition {Bi(2.1)Sr(2)CaCu(2)O(x) + 0.4Sr(1.7)Ca(1.3)Al(2)O(6)} was studied. At temperatures below 600 degrees C, the phases crystallized in the order Bi-2201, Cu(2)O, CaO, (Sr, Ca)(3)Bi(2)O(6), while Al ions concentrated in the remaining glass. Above 600 degrees C, Bi-2212 and (Sr, Ca)(3)Al(2)O(6) formed simultaneously, so that at 750 degrees C, the two-phase composite Bi-2212-(Sr, Ca)(3)Al(2)O(6) was obtained that contained grains of the aluminate phase 0.03-0.3 mu m in size. The Al-rich phase surplus increased the stability of the glass and accelerated Bi-2212 phase formation, while development of superconductivity in Bi-2212 was slowed down. It was shown that composite glass-ceramics with bulk superconductivity could be obtained at temperatures above 850 degrees C.
- Добавил в систему: Казин Павел Евгеньевич