Coexistence of antiferromagnetic and spin-glass behaviour in U₃Rh₃Sb₄

Abstract

We report on single-crystal growth, crystal structural determination and magnetic, electrical resistivity and thermoelectric power measurements performed on a set of single crystals of U 3 Rh 3 Sb 4 . The compound crystallizes in the cubic Y 3 Au 3 Sb 4 -type structure. The ac susceptibility and dc magnetization both indicate that the compound undergoes a transition into a spin-glass state below 14.7 K. The resistivity shows a broad minimum at 30 K. The thermoelectric power is negative in the whole temperature range studied and exhibits an enhanced value of −32 µV K −1 at room temperature.

Unique Crystal Structure and Anomalous Magnetic Behavior of Quaternary U2ScB6C3

“…We must admit the fact that the residual resistivity ratio (RRR) is small and the absolute value of ρ( T ) is large like that for the metallic system, but it is not strange for intermetallic U-based compounds. For instance, samples of U 2 Pt 2 In , and UCo 0.5 Sb 2 have been reported to show similar magnitudes of RRR and ρ( T ). In these compounds, Kondo effect, electron localization, and layer-type structure have been considered to play a key role among other parameters like atomic disorders and microcracks influencing also the resistivity values.…”

Some aspects of antiferromagnetic ordering in LiMnP0.85V0.15O4: Neutron diffraction and DC-magnetization studies

“…In addition, the AC-susceptibility (w 0 ¼ dM/dH) measurements carried out for LiMnPO 4 [31] demonstrated a frequency independence of the peak position that is not typical of spin-glass. Moreover, the experimental data for the AFMþ SG systems usually show that at high values of applied magnetic field the ZFC curve tends to the FC one [55], whereas in the case of LiMnP 0.85 V 0.15 O 4 the opposite situation occurs (Fig. 8a).…”

Magnetic properties of the semimagnetic semiconductor Zn0.15Mn0.85Ga2Se4

“…2 shows the temperature derivative dw/dT vs. T curve, obtained by numerical derivation of the susceptibility curve. The minimum at TE10 K, in the dw/dT vs. T curve, indicates that some additional phase transition sets in the ZMGSe below this temperature [9]. In order to investigate better this transition, Fig.…”