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Magnetic ordering in Sc2CoSi2-type R2FeSi2 (R=Gd, Tb) and R2CoSi2 (R=Y, Gd–Er) compoundsстатья
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: 9 июня 2016 г.
- Авторы: Morozkin A.V., Knotko A.V., Yapaskurt V.O., Pani M., Nirmala R., Quezado S., Malik S.K.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 413
- Год издания: 2016
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 97
- Последняя страница: 107
- DOI: 10.1016/j.jmmm.2016.04.034
- Аннотация: Magnetic and magnetocaloric properties of Sc2CoSi2-type R2TSi2 (R = Gd - Er, T = Fe, Co) compounds have been studied using magnetization data. These indicate the presence of mixed ferromagnetic and antiferromagnetic interactions in these compounds. One observes a ferromagnetic transition followed by an antiferromagnetic order and a further possible spin-reorientation transition at low temperatures. Compared to Gd2{Fe, Co}Si2, the Tb2FeSi2 and {Tb - Er}2CoSi2 compounds exhibit remarkable hysteresis (for eg. Tb2FeSi2 shows residual magnetization Mres/Tb = 2.45 mB, coercive field Hcoer = 14.9 kOe, and critical field Hcrit ~ 5 kOe at 5 K) possibly due to the magnetocrystalline anisotropy of the rare earth. The R2{Fe, Co}Si2 show relatively small magnetocaloric effect (i.e. isothermal magnetic entropy change, dSm) around the magnetic transition temperature: the maximal value of MCE is demonstrated by Ho2CoSi2 (dSm = -8.1 J/kgK at 72 K and dSm = -9.4 J/kgK at 23 K in field change of 50 kOe) and Er2CoSi2 (dSm = -13.6 J/kgK at 32 K and dSm = -8.4 J/kgK at 12 K in field change of 50 kOe).
- Добавил в систему: Морозкин Александр Владимирович