In the correlated metal URhGe ferromagnetic order (T_C = 9.5 K) and superconductivity (T_s= 0.25 K) coexist at ambient pressure. Here we report on alloying URhGe by Ru, which enables one to tune the Curie temperature to 0 K. URuGe has a paramagnetic ground state and is isostructural to URhGe. We have prepared a series of polycrystalline URh_{1-x}Ru_{x}Ge samples over a wide range of x values. Magnetization and electrical resistivity data (T > 2 K) show, after an initial increase, a linear suppression of T_C with increasing x. The critical Ru concentration for the suppression of ferromagnetic order is x_cr ~ 0.38.
@article{arxiv.cond-mat/0507068,
title = {Suppression of ferromagnetism in URhGe doped with Ru},
author = {S. Sakarya and N. H. van Dijk and N. T. Huy and A. de Visser},
journal= {arXiv preprint arXiv:cond-mat/0507068},
year = {2009}
}
Comments
pdf file (2 pages, 1 figure); submitted to the Proceedings of the Int. Conf. SCES'05