Magnetic properties of weak itinerant ferromagnetic Ni-V alloys

Magnetization measurements of a serie of Ni-V alloys at high magnetic fields and low temperatures will be presented. Characteristic exponents observed in the low field susceptibility and spontaneous magnetization can be extracted and traced upon dilution. Especially the changes around a critical V-concentration of 1/9 will be discussed probing and comparing the validity of itinerant models and significance of spin fluctuations and magnetic cluster contributions.