The ternary intermetallic compounds from families of RTSb and RTSn ( R- rare earth, T- transition metal) orders magnetically below a few Kelvin and are antiferromagnets, the ordering temperature is e.g. 3.5 K and 11 K for GdNiSb[1] for GdNiSn[2], respectively.

The new GdTiSb intermetallic compound possesses the very high ordering temperature reaching the 268 K. It crystallizes in a tetragonal type of structure with lattice parameters a=652 pm and c= 935 pm. The magnetic susceptibility in the paramagnetic region follows the Curie-Weiss law with the effective magnetic moment of 8.1 µB (7.94 for Gd³⁺). The ferromagnetic transition occurs at 275 K under the magnetic field of 0.01 T. AC susceptibility measurements made in very weak magnetic field verifies it down to 268 K. The tin counterpart compound - GdTiSn orders magnetically below 108 K.

The GdTiSb resistivity at the room temperature is of the value of 110 μΩ*cm and shows a negative curvature in the temperature dependence, what can suggest a strong interaction between the d and the f electrons systems. The main ferromagnetic transition is slightly visible on the resistivity. Paradoxically, the reorientation effect occurring at 30 K emerges as an upturn on the resistivity. The mirror fingerprint of magnetic phenomena is visible in the GdTiSn temperature dependence of resistivity, at about 110 K and 15 K.

[1] R.V.Skolozdra et al, Acta Physica Polonica A, 92(1997) 343-346

[2] Y.Adosh et al., J. Magn. Magn. Mater 177-181(1998) 1063-64

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/3409 must be provided.

1. Electronic structure and magnetic properties of nano and single crystals SrLaAlO₄: Mn