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Phase Relation in the Bi(Bb)-Sr-Ca(Y,RE)-CuO Systemsстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Leonyuk L.I., Vetkin A.G., Belokoneva E.L., Leonyuk N.I.
- Журнал: Superconductor Science and Technology
- Номер: 5
- Год издания: 1992
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 658
- Последняя страница: 652
- DOI: 10.1088/0953-2048/5/11/011
- Аннотация: Electron microscopy and XRD data for the Bi(Pb)-Sr-Ca-Cu-O system show that in the field under consideration at least two phases of the same (2212) structure, but with different lattice parameters, are crystallizing. The Pb distribution coefficient k has been determined from the Pb concentration in the melt. According to XRD the samples represent epitaxial intergrowth of three phases: one of the (2201) structure, and two of the (2212) structure with slightly different c parameters. In the Bi-Sr-Ca(Y, RE)-Cu-O system the final aggregate represents an intergrowth of three phases: the (2201) phase containing no Y(RE) and two (2212) phases with different c parameters. Tc correlates with the fraction of the (2212) phase of smaller c parameter, and the fraction that forms depends on the Y(RE) concentration in the melt. Electron diffraction pattern analysis has shown that in multiphase products there are components with tetragonal and orthorhombic symmetry; these have different Pb concentrations.
- Добавил в систему: Леонюк Николай Иванович