Quantum Critical Point In The Itinerant Ferromagnet Ni1-xrhx

We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni1-xRhx alloys. Through magnetization and muon spin relaxation measurements, we show that the ferromagnetic ordering temperature is suppressed continuously to zero at x(crit) = 0.375 while the magnetic volume fraction remains 100% up to x(crit), pointing to a second order transition. Non-Fermi liquid behavior is observed close to x(crit), where the electronic specific heat C-el/T diverges logarithmically, while immediately above x(crit) the volume thermal expansion coefficient alpha(V)/T and the Gruneisen ratio Gamma = alpha(V)/C-el both diverge logarithmically in the low temperature limit, further indication of a ferromagnetic quantum critical point in Ni1-xRhx.