Antiphase Antiferromagnetic Structure of Chromium

Abstract

triangular A^'-B", vfheny< \y2\9 orjv>0.41. The spontaneous magnetization at T = 0 is Mo=I{l+x), y>\y2\ =I(2-x){l/\y,\'l), y<\y2\,/ being here the saturation magnetization of YIG. The resulting curve (in which there is no adjustable parameter) agrees rather well with experiment (Fig. 2). These considerations can be extended to higher temperatures. The upper Curie point corresponds to ferrimagnetic order when y>y2 /^ -ot^y^y he < 1.45), and to antiferromagnetic order at higher x.

Magnetic MAX phases from theory and experiments; a review

“…The main difference observed is in the temperature dependence of the resistivity, where there is a kink in the data for the nitride, characteristic of a spin-density-wave state, also observed for pure Cr [111,112]. Generally one would expect a drastic difference between a magnetic MAX phase carbide and the corresponding nitride, since in similar systems the nitride phase will typically give rise to higher transition temperatures.…”

“…The first magnetic MAX phase showing a ferromagnetic signal was reported by Ingason et al [3], who studied the (Cr 1−x Mn x ) 2 GeC phase as epitaxial thin films on MgO [111] substrates. Ab-initio calculations were used to establish the solubility limit of Mn in Cr 2 GeC and the results indicated that the (Cr 0.75 Mn 0.25 ) 2 GeC would be stable.…”

“…However, using Mn 0.5 V 0.5 , Ga, and C targets, Tao et al [36] synthesized a (V,Mn) 3 GaC 2 MAX phase as an epitaxial thin film on a MgO [111] substrates. From SQUID measurements, a FM response well above 350 K could be concluded, with a remanent moment at 100 K of approximately 0.04 µ B per M atom.…”

“…Meshkian et al [35] synthesised (Mo 0.5 Mn 0.5 ) 2 GaC as heteroepitaxial thin films on MgO [111] substrates. The samples were co-sputtered from a Ga and C target as well as a composite Mo 0.5 Mn 0.5 target.…”

“…Guided by predictions from ab-initio calculations, Ingason et al [25] advanced beyond alloying and synthesized Mn 2 GaC samples as a heteroepitaxial thin film on MgO [111] substrates.…”