The magnetostriction of the intermetallic compound ErCo2 near the magnetic phase transition paramagnetism-ferrimagnetism

Nikitin, S.A.; Karpenkov, D.Y.; Karpenkov, A.Y.; Nizhankovskii, N.I.; Palewski, T.; Skokov, K.P.

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.

Авторы: Nikitin S.A., Karpenkov D.Yu, Karpenkov A.Yu, Nizhankovskii N.I., Palewski T., Skokov K.P.
Журнал: Journal of Physics: Conference Series
Том: 303
Год издания: 2011
Издательство: IOP Publishing
Местоположение издательства: [Bristol, UK], England
Первая страница: 012032
DOI: 10.1088/1742-6596/303/1/012032
Аннотация: The purpose of this work was the investigation of magnetostriction near magnetic phase transition paramagnetism-ferrimagnetism in ferrimagnetic intermetallic compound ErCo2. It is known that 3d-electrons are delocalized and form a 3d-zone in it, whereas 4f-electrons localized and create an effective exchange field which acts on the Co sublattice. It leads to magnetic ordering of the last. We have found there is a sharp jump in the curve of thermal expansion near T = 37K, which indicates the presence of first order phase transition. Volume magnetostriction ω reach huge values (3.103 in the field μ0H = 4T near TC). At temperatures T > TC λ|| and λ⊥ have small values in the absence of an external magnetic field. However, in fields H>Hcrit λ|| and λ⊥ rapidly increase and get the values that have the same order of magnitude as at T≈TC. This indicates that the external magnetic field can restore the magnetism of 3d-subsystem at T>TC.
Добавил в систему: Никитин Сергей Александрович

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The magnetostriction of the intermetallic compound ErCo2 near the magnetic phase transition paramagnetism-ferrimagnetismстатья

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