Abstract
We report the first measurements of anisotropy in magnetic susceptibility, magnetization, and electrical resistivity using single crystals of GdTSb 3 (T = Cr, V). GdTSb 3 is a quasi-two dimensional system with orthorhombic crystal structure (space group: Pbcm). Unlike the other light rare earth chromium antimonides (R = Ce–Nd, Sm), in which two magnetic transitions are observed, GdCrSb 3 undergoes a single ferrimagnetic transition at T C=86 K, which is evident in both the magnetic susceptibility and electrical resistivity. Within the b–c plane, GdCrSb 3 is found to have metallic behavior from 5 to 300 K, but it is found to have insulating behavior (d ρ a /d T<0) along the stacking axis. GdVSb 3 is found to have a Néel transition at 5 K due to the localized Gd ions, but no ferromagnetic transition.
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