We report measurements of the temperature dependence specific heat, magnetic susceptibility in single crystals of the series of intermetallic compounds Tb1−xYxRhIn5 (nominal concentrations x=0.15,0.30,0.40,0.50 and 0.70). A mean field approximation to simulate the macroscopic properties along the series has been used. Neutron diffraction data in powdered sample of nominal concentration Tb0.6Y0.4RhIn5 reveal AFM propagation vector k=[21021] with the magnetic moments oriented close to the tetragonal \textit{c} axis. We discuss the role of combined effects of crystalline electric field (CEF) perturbations and dilution in the magnetic properties evolution with Y content. In particular, we suggest that changes in the Tb-In first neighbors distances, i.e. the TbIn3 cuboctahedra distortion, are responsible for changes in the Tb crystalline potential and the possible reorientation of Tb magnetic moments for x>0.4. This reflects non negligible variations of the Bnm crystal field parameters and the energy levels splitting with \textit{x}.
@article{arxiv.1709.00063,
title = {Antiferromagnetism weakening with Y-substitution in the TbRhIn$_5$ intermetallic system},
author = {R. P. Amaral and R. Lora-Serrano and D. J. Garcia and D. Betancourth and J. M. Cadogan and S. Muñoz-Pérez and R. Cobas-Acosta and M. Avdeev and E. M. Bittar and J. G. S. Duque and P. G. Pagliuso},
journal= {arXiv preprint arXiv:1709.00063},
year = {2017}
}