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Synthesis and crystal structure of the Sr2Al1.07Mn0.93O5 brownmilleriteстатья
Статья опубликована в высокорейтинговом журнале
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: Hadermann Joke, Abakumov Artem M., D'Hondt Hans, Kalyuzhnaya Anna S., Rozova Marina G., Markina Maria M., Mikheev Mikhail G., Tristan Natalia, Klingeler Ruediger, Buechner Bernd, Antipov Evgeny V.
- Журнал: Journal of Materials Chemistry
- Том: 17
- Номер: 7
- Год издания: 2007
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 692
- Последняя страница: 698
- DOI: 10.1039/b614168d
- Аннотация: (A) new brownmillerite-type compound Sr2Al1.07Mn0.93O5 was synthesized. The crystal structure was determined using electron diffraction and high resolution transmission electron microscopy and refined from X-ray powder diffraction data ( space group Imma, a = 5.4358(1) angstrom, b = 15.6230(4) angstrom, c = 5.6075(1) angstrom, R-I = 0.036, R-P = 0.023). The structure is characterized by a disordered distribution of the tetrahedral chains in L and R configuration and a partial occupation of the octahedral position by the Mn3+ and Al3+ cations. The relationships between the crystal structures of Sr2Al1.07Mn0.93O5 and its A(2)B'MnO5 analogues (A = Ca, Sr, B' = Al, Ga) and the structural reasons for the different types of tetrahedral chain ordering in brownmillerites are discussed. The temperature dependences of the magnetic susceptibility and specific heat reveal that the compound is antiferromagnetically ordered below T-N = 105 K.
- Добавил в систему: Маркина Мария Михайловна