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Magnetostructural phase transitions and magnetocaloric effect in Tb-Dy-Ho-Co-Al alloys with a Laves phase structureстатья
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: 6 февраля 2017 г.
- Авторы: Tereshina I.S., Chzhan V.B., Tereshina E.A., Khmelevskyi S., Burkhanov G.S., Ilyushin A.S., Paukov M.A., Havela L., Karpenkov A.Yu, Cwik J., Koshkid’ko Yu S., Miller M., Nenkov K., Schultz L.
- Журнал: Journal of Applied Physics
- Том: 120
- Год издания: 2016
- Издательство: AIP Publishing
- Местоположение издательства: United States
- Первая страница: 01390(1)
- Последняя страница: 01390(10)
- DOI: 10.1063/1.4955047
- Аннотация: The influence of simultaneous substitution within the rare earth (R) and Co sublattices on the structural, magnetic and magnetocaloric properties of the Laves phase RCo2-type compounds is studied. Main attention is devoted to the studies of the magnetostructural phase transitions and the transition types with respect to the alloy composition. Multicomponent alloys Tbx(Dy0.5Ho0.5)1-xCo2 and Tbx(Dy0.5Ho0.5)1-x(Co1.75Al0.25)2 were prepared with the use of high purity metals. Majority of the Tbx(Dy0.5Ho0.5)1-xCo2 alloys exhibit magnetic transitions of the first-order type and a large magnetocaloric effect. The substitution of Al for Co in Tbx(Dy0.5Ho0.5)1-xCo2 increases the Curie temperature but changes the transition type from first-to the second-order. The discussion of the physical mechanisms behind the observed phenomena is given on the basis of the first principles electronic-structure calculations taking into account both the atomic disorder and the magnetic disorder effects at finite temperatures. The advantage of Al-containing materials is that sufficiently high MCE values are preserved at T > TC.
- Добавил в систему: Терёшина Ирина Семёновна