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Study of exchange interactions between chiral-ordered magnetic layers in rare earth superlatticesстатья
- Авторы: Kravtsov E.A., Andreeva M.A., Antropov N., Baulin R.A., Ryabukhina M., Popov V.V., Chumakov A.I., Rüffer R.
- Сборник: Электронная публикация http://ftp.esrf.fr/pub/UserReports/61482_B.pdf
- Год издания: 2018
- Аннотация: The main goal of our work was to study magnetic ordering in Al2O3/Nb(100nm)/Y(10nm)/[Dy(6nm)/Gd(6nm)]20Al(10nm) multilayers using nuclear resonant (Mössbauer) reflectometry technique. We want to determine of magnetic structure Dy/Gd superlattices as a function of layer’s thicknesses, temperature and magnetic field, and establish correlation between macroscopic magnetic properties of the superlattices and their microscopic magnetic structure. It was the first experiment for 161Dy isotope (25.6515 keV E1 transition. We have performed the nuclear resonance reflectivity measurements on the [Dy/Gd]20 multilayer in the time domain for the first time. Nuclear resonance reflectivity curve indicates the existence of nonlinear helix magnetic structure at 4 K in Dy layers. Nuclear resonant reflectivity spectra were measured at temperature range 4-110 K. Frequency of quantum beats allows to restore values of magnetic hyperfine field at each temperature.
- Добавил в систему: Андреева Марина Алексеевна