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Thermodynamic properties of the kagome-like compound YBaCo(4-x)Zn(x)O(7) with magnetic dilutionстатья
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: Markina M., Vasilchikova T., Vasiliev A., Lemmens P., Valldor M.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 320
- Номер: 14
- Год издания: 2008
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: E434
- Последняя страница: E436
- DOI: 10.1016/j.jmmm.2008.02.080
- Аннотация: The magnetic susceptibility and specific heat measurements were performed on YBaCo(4-x)Zn(x)O(7) in a wide temperature range. This compound is characterized by a mixed valence of Co (Co(2+)/Co(3+)) and has a kagome-like layered magnetic arrangement of spin moments in the P6(3)mc hexagonal crystal structure. This arrangement is known for strong frustration of magnetic interactions and prevents the formation of long range magnetically ordered ground states. However, peak-like anomalies were found in the magnetic susceptibility at the temperatures 66, 27, 15 and 3K for x = 0, 1, 2, 3, respectively. Small anomalies in the specific heat at the related temperatures were found for x = 1, 2, 3, indicating the magnetic freezing of the spin system. Zn-substitution changes the ratio Co(2+)/Co(3+) which strongly influences the magnitudes and temperatures of anomalies in magnetic susceptibility and specific heat. The increase of Zn content in YBaCo(4-x)Zn(x)O(7) leads to a rapid decrease of the magnetic contribution in the specific heat in a wide temperature range. (C) 2008 Elsevier B.V. All rights reserved.
- Добавил в систему: Маркина Мария Михайловна