We report on a comprehensive study of CePd1−xRhx(0.6≤x≤0.95) poly- and single crystals close to the ferromagnetic instability by means of low-temperature ac susceptibility, magnetization and volume thermal expansion. The signature of ferromagnetism in this heavy-fermion system can be traced from 6.6 K in CePd down to 25 mK for x=0.87. Despite pronounced non-Fermi-liquid (NFL) effects in both, specific heat and thermal expansion, the Gr\"uneisen ratio {\it does not} diverge as T→0, providing evidence for the absence of a quantum critical point. Instead, a peculiar "Kondo-cluster-glass" state is found for x≥0.65, and the NFL effects in the specific heat, ac susceptibility and magnetization are compatible with the quantum Griffiths phase scenario.
@article{arxiv.0905.4591,
title = {Kondo-Cluster-Glass State near a Ferromagnetic Quantum Phase Transition},
author = {T. Westerkamp and M. Deppe and R. Kuechler and M. Brando and C. Geibel and P. Gegenwart and A. P. Pikul and F. Steglich},
journal= {arXiv preprint arXiv:0905.4591},
year = {2015}
}