Vanadium doped layered copper-chromium sulfides: The correlation between the magnetic properties and XES data

Magnetic Properties of Novel Layered Disulfides CuCr0.99Ln0.01S2 (Ln = La…Lu)

“…The μ eff value of 3.77 μ B for CuCrS 2 was in a good agreement with the experimental data reported previously and corresponded to the theoretical value for Cr 3+ state (μ eff (Cr 3+ ) = 3.87 μ B ). Note that for CuCrS 2 experimental μ ef f value, it lay within the range of 3.75–3.79 μ B [ 5 , 20 , 21 , 26 , 27 ]. The Weiss constant of −140 K correlates well with the reported data and lies within the range of −110 to −150 K [ 5 , 20 , 21 , 23 , 27 ].…”

“…The field dependence of the magnetic susceptibility χ(1/H) was measured in order to take into account the possible presence of the ferromagnetic contribution to the magnetic susceptibility value. The effective magnetic moment as a function of temperature was calculated as follows [ 21 , 27 ]: …”

“…The antiferromagnetic ordering in CuCrS 2 could be observed at temperatures below the Neel temperature (T N ≈ 40 K). Above T N temperature, CuCrS 2 -matrix and CuCr 1-x M x S 2 solid solutions become paramagnetic and their magnetic susceptibility follows the Curie-Weiss law [ 2 , 8 , 17 , 18 , 19 , 20 , 21 ]. As was mentioned above, the phonon scattering has a significant impact on the thermoelectric properties of the material.…”

“…This fact indicates the presence of a significant ferromagnetic contribution to the magnetic susceptibility value. It should be noted that the corresponding contribution could be due to the presence of specific ferromagnetic impurities [ 21 ]. Thus, in this study, the ferromagnetic contribution in the magnetic susceptibility value was taken into account.…”

Effect of the Order-Disorder Transition on the Electronic Structure and Physical Properties of Layered CuCrS2

“…Copper-chromium disulfide CuCrS 2 is considered to be a promising functional material for electronic devices. Undoped copper-chromium disulfide and CuCrS 2 based solid solutions exhibit a wide range of physical properties such as thermoelectricity [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ], ionic conductivity [ 17 , 18 , 19 , 20 , 21 ] and various magnetic properties [ 22 , 23 , 24 ]. Thanks to the combination of ionic conductivity and thermoelectric properties (the Seebeck coefficient, electric and thermal conductivities, ZT) demonstrated by CuCrS 2 and similar layered transition metal dichalcogenides MCrX 2 (M = Cu, Ag; X = S, Se), these compounds can be considered phonon glasses.…”