Open AccessМагнитные структуры и магнитные фазовые переходы в редкоземельных интерметаллидах RMn-=SUB=-2-=/SUB=-Si-=SUB=-2-=/SUB=- (R=Sm, Tb)
Author(s) -
Н. В. Мушников,
Е. Г. Герасимов,
В. С. Гавико,
П. Б. Терентьев,
К. А. Язовских,
А. Н. Пирогов
Publication year - 2018
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2018.06.45979.03m
Subject(s) - condensed matter physics , neutron diffraction , magnetic structure , magnetic anisotropy , materials science , crystallography , anisotropy , magnetic susceptibility , atom (system on chip) , chemistry , magnetization , magnetic field , physics , crystal structure , quantum mechanics , computer science , embedded system
The magnetic structures that form in La_1– x R_ x Mn_2Si_2 ( R = Sm, Tb) layered compounds with various concentrations x have been determined by magnetic neutron diffraction and magnetic measurements, and the magnetic phase diagrams have been built. It is shown that the formation of the magnetic structures is dependent not only on exchange interactions, but also on the type of the magnetic anisotropy of a rare-earth atom. It is found that, in La_1– x Tb_ x Mn_2Si_2 compounds with 0.2 < x < 0.5, the competition of the Tb–Mn and Mn–Mn interlayer exchange interactions and the existence of a strong uniaxial magnetic anisotropy in the Mn and Tb sublattices leads to the frustrated magnetic state and prevents the formation of the long-range magnetic order in the Tb sublattice.