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Antiferromagnetic spin correlations in palladium-based Pd-Fe, Pd-Fe-Ag, and Pd-Fe-Rh magnetic alloysстатья
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: Delyagin N.N., Erzinkyan A.L., Parfenova V.P., Reyman S.I.
- Журнал: Journal of Experimental and Theoretical Physics
- Том: 95
- Номер: 6
- Год издания: 2002
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1056
- Последняя страница: 1061
- DOI: 10.1134/1.1537297
- Аннотация: The magnetic structure of Pd1 - xFex (x = 0.03, 0.06, 0.10, 0.15, and 0.20) alloys is investigated using the method of Fe-57-Mossbauer spectroscopy. The distribution functions P(B-hf) of hyperfine magnetic fields have a discrete structure defined by variations of the contribution to B-hf from the magnetic moment of the neighboring Fe atoms. The anomalies of intensities of components of the functions P(B-hf), which increase with the concentration of iron, are indicative of the instability of configurations with a large total spin and of the formation of local spin configurations with the antiferromagnetic orientation of magnetic moments. The probability of formation of such configurations is defined by the competition of the ferromagnetic Fe-Pd exchange interaction with the direct antiferromagnetic exchange between the nearest neighboring atoms of Fe. An Ag or Rh impurity effectively induces the process of spin flipping, which explains the anomalously strong effect of impurities on the magnetic ordering temperature. The results confirm the presence in Pd-Fe alloys of perturbations of long-range ferromagnetic order revealed by neutron diffraction. (C) 2002 MAIK "Nauka/Interperiodica".
- Добавил в систему: Ерзинкян Арсен Левонович