Non-magnetic ions doping effects in the magnetic properties of zircon-type GdCrO4 compound

In this paper, we report the effect of V and Y-doping on the structural and magnetic properties of the GdCrO4 compound obtained by the co-precipitation method. The analysis of the X-ray diffraction data using the Rietveld refinement confirm the formation of a single phase consistent with the zircon-type structure (tetragonal and I41/ amd space group) and a decreasing of lattice parameter with increasing of doping. The T-dependent magnetic susceptibility is consistent with a ferromagnetic and an antiferromagnetic orders for YCrO4 and GdVO4 samples, respectively. On the other hand, the positive signal of Curie-Weiss constants of doped samples indicate the predominance of ferromagnetic correlations. Furthermore, the displacement of the maximum of susceptibility and the thermal hysteresis as a function of doping can be an indication of frustration effects. Isothermal magnetization measured at T = 2 K show a change of slope at low magnetic fields for V-doped samples and a decrease of the magnetic moment for Y-doped GdCrO4. At T = 15 K, the analysis of MvsH curves reveal that only part of Gd3+ magnetic moments are ordered.

Automated summary

This paper investigates the impact of V and Y-doping on the structural and magnetic properties of GdCrO4 compound, showing a formation of single-phase structures and different magnetic orders. The magnetic susceptibility, Curie-Weiss constants, and isothermal magnetization measurements provide insights into the magnetic correlations and frustration effects in the doped samples.