Ground-state degeneracy and complex magnetism of geometrically frustrated Gd2Ir0.97Si2.97

Spin-gapless semiconducting characteristics and related band topology of quaternary Heusler alloy CoFeMnSn

“…Above the transition temperature, the compound follows Curie–Weiss (C–W) behavior given by χ = C /( T − θ P ), where C is the Curie constant and θ P is the paramagnetic Curie–Weiss temperature. 46,47 C–W fit of the inverse susceptibility data in the temperature region 600–700 K yields μ eff. = 4.22 μ B f.u.…”

Griffiths-like behavior and magnetocaloric properties of rare-earth silicide Tb2Co0.8Si3.2

“…Preliminary crystallographic studies denote that the Tb 2 CoSi 3 is stabilized in a non-stoichiometric Tb 2 Co 0.8 Si 3.2 compound similar to the other non-stoichiometric silicides in the series [10,11,15,16]. The magnetic state of Tb 2 Co 0.8 Si 3.2 was found to be a long-range ferromagnetic transition at 58 K, followed by antiferromagnetic transitions at 24 K and 8 K, respectively.…”

“…In the case of antiferromagnets, as the applied magnetic field is increased, it becomes more energetically favorable for spins to align in the direction of the applied magnetic field rather than maintaining antiferromagnetic order. Therefore, in the presence of an applied magnetic field, antiferromagnetic transitions can only be stabilized at lower temperatures than in the absence of an applied magnetic field and corresponding magnetic entropy will distribute to high temperature [15,36].…”

“…Recently, a new cooling figure of merit gained attention is TEC (∆T lift ), which determines how large is the magnetocaloric efficiency over a useful temperature range ∆T lift because it is devoid of the overestimation of cooling efficiency as in the case of RCP. As shown in figure 9, TEC (10), TEC (15), and TEC (20) for ∆B = 90 kOe, 70 kOe, and 50 kOe around T 1 are weighed using the relation [38],…”

“…In the case of ternary rare-earth R 2 TX 3 silicides, long-range antiferromagnetic/ferromagnetic ground states can be observed in R 2 PdSi 3 (R-Pr, Er, Gd) [5][6][7], R 2 PtSi 3 (R-Nd, Gd, Tb) [4,8], R 2 CuSi 3 (R-Dy, Ho) [2], Ce 2 IrSi 3 [9] and R 2 CoSi 3 (R-Pr, Nd) [10,11]. On the other hand, respective other rare-earth compounds such as R 2 PdSi 3 (R-Tb, Dy, Ho) [3], R 2 PtSi 3 (R-Ho, Er) [12,13], R 2 CuSi 3 (R-Pr, Gd) [14], Gd 2 IrSi 3 [15], and R 2 NiSi 3 (R-Gd, Tb, Er, Ho) [1,16,17] exhibit spin glass/reentrant spin glass behavior. Thus, these rare-earth silicides do not exhibit any common trend in the magnetic properties rather, their magnetic behaviors are distinct characteristics of each compound.…”