%0 journal article
%@ 1098-0121
%A Grigoriev, S.V.,Maleyev, S.V.,Dyadkin, V.A.,Menzel, D.,Schoenes, J.,Eckerlebe, H.

%D 2007
%J Physical Review  B
%N 9
%P 092407 
%R doi:10.1103/PhysRevB.76.092407
%T Principal interactions in the magnetic system Fe1−xCoxSi: Magnetic structure and critical temperature by neutron diffraction and SQUID measurements
%U https://doi.org/10.1103/PhysRevB.76.092407
9 
%X The compound Fe1−xCoxSi is a good representative for a cubic magnet with Dzyaloshinskii-Moriya interaction. On the basis of the neutron diffraction and superconducting quantum interference device measurements, we built the H-T phase diagram for the compound with different x from 0.1 to 0.7. The same set of parameters governs the magnetic system for different x. These parameters are well interpreted in the framework of the recently developed theory [S. V. Maleyev, Phys. Rev. B 73, 174402 (2006)]. As a result, the spin-wave stiffness, the Dzyaloshinskii constant, the anisotropic exchange constant, and the spin-wave gap caused by the Dzyaloshinskii interaction have been obtained and plotted as a function of x. The changes of the magnetic structure with x can be well interpreted on the basis of our findings.