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Crossover between itinerant ferromagnetism and antiferromagnetic fluctuations in filled skutterudites MFe4Sb12 (M = Na, Ba, La) as determined by NMRстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Gippius A., Baenitz M., Morozova E., Leithe-Jasper A., Schnelle W., Shevelkov A., Alkaev E., Rabis A., Mydosh J., Grin Yu, Steglich F.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 300
- Номер: 1
- Год издания: 2006
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: E403
- Последняя страница: E406
- DOI: 10.1016/j.jmmm.2005.10.130
- Аннотация: Nuclear resonance investigations on the Na-23 and the La-139 nuclei in filled skutterudites MFe4Sb12 (M = Na, La) are reported. In contrast to NaFe4Sb12 for the La compound the effective magnetic moment is remarkably lower and the Curie-Weiss temperature is negative which indicates antiferromagnetic correlations. The spin-lattice relaxation rates 1/T-1 exhibit a qualitatively different temperature behavior which provides clear evidence for dissimilar types of itinerant magnetism in the two compounds. For NaFe4Sb12 1/T-1 vs. T indicates itinerant ferromagnetism with ordering at T-c = 85 K, whereas for the La0.9Fe4Sb12 weak itinerant antiferromagnetism with no ordering is found. 1/T-1 is analyzed in terms of Moriya's self-consistent renormalization theory (SCR) for itinerant magnetic materials. (C) 2005 Elsevier B.V. All rights reserved.
- Добавил в систему: Шевельков Андрей Владимирович