# Magnetic behavior of new compounds, Gd3RuSn6 and Tb3RuSn6

## TL;DR

This study investigates the magnetic, electrical, and thermal properties of Gd3RuSn6 and Tb3RuSn6, revealing antiferromagnetic transitions, unusual resistivity behavior, and complex magnetic phenomena in these orthorhombic compounds.

## Contribution

First detailed characterization of Gd3RuSn6 and Tb3RuSn6, uncovering their magnetic transitions and complex magnetic behaviors in orthorhombic structure.

## Key findings

- Antiferromagnetic order near 19 K (Gd) and 25 K (Tb)
- Additional magnetic transitions around 14 K (Gd) and 17 K (Tb)
- Unusual resistivity minimum and magnetoresistance anomalies

## Abstract

We report temperature (T) dependence of dc magnetization, electrical resistivity (rho(T)), and heat-capacity of rare-earth (R) compounds, Gd3RuSn6 and Tb3RuSn6, which are found to crystallize in the Yb3CoSn6-type orthorhombic structure (space group: Cmcm). The results establish that there is an onset of antiferromagnetic order near (T_N) 19 and 25 K respectively. In addition, we find that there is another magnetic transition for both the cases around 14 and 17 K respectively. In the case of the Gd compound, the spin-scattering contribution to rho is found to increase below 75 K as the material is cooled towards T_N, thereby resulting in a minimum in the plot of rho(T) unexpected for Gd based systems. Isothermal magnetization at 1.8 K reveals an upward curvature around 50 kOe. Isothermal magnetoresistance plots show interesting anomalies in the magnetically ordered state. There are sign reversals in the plot of isothermal entropy change versus T in the magnetically ordered state, indicating subtle changes in the spin reorientation with T. The results reveal that these compounds exhibit interesting magnetic properties.

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Source: https://tomesphere.com/paper/1705.08436