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3 PHASES IN THE SYSTEM HG1-XCXBA2CUOY (0.00-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1.00)статья
Информация о цитировании статьи получена из
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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: LOUREIRO SM, ANTIPOV EV, CAPPONI JJ, MAREZIO M.
- Журнал: Materials Research Bulletin
- Том: 30
- Номер: 12
- Год издания: 1995
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 1463
- Последняя страница: 1470
- DOI: 10.1016/0025-5408(95)00154-9
- Аннотация: Samples of the [Hg1-xCx]-Ba(2)CuOy system [(Hg,C)-1201] with stoichiometries within the range 0.00 less than or equal to x less than or equal to 1.00 were synthesized by a high-pressure, high-temperature technique. The sample with x = 0.00 [HgBa2CuO4+delta] was non-superconducting with lattice parameters a = 3.8676(2) Angstrom, c = 9.470(1) Angstrom. At low ranges of substitution (0.10 less than or equal to x less than or equal to 0.30), the predominant phase was found to be Hg-1201 with identical lattice parameters to those found for x = 0.00. At x = 0.40 the Hg-1201 phase coexists in similar proportions with the phase of mixed [Hg-1-x,C-x]-1201 stoichiometry. At x = 0.50, this second phase with lattice parameters a = 3.9271(3) Angstrom, c = 8.676(2) Angstrom is predominant and only traces of the Hg-1201 phase were found. At x = 0.75 the [Hg-1-x,C-x]-1201 phase found for x = 0.50 coexists with the CO3Ba2CuOy phase, which is the extreme of the substitution range. This latter was predominant at x = 1.00 with lattice parameters a = 4.0044(3) Angstrom, c = 7.909(1) Angstrom, but at higher pressure than the previous substitutions. This system is constituted of three main phases, HgBa2CuO4+delta, Hg1-xCxBa2CuOy (x = 0.50) and CO3Ba2CuOy, which appear in different proportions according to the percentage of substitution and the applied synthesis pressure.
- Добавил в систему: Антипов Евгений Викторович