Low-frequency susceptibility of single-domain nickel particles from 2 K up to the Curie point

Abstract

The magnetic susceptibility of small single-domain nickel particles chemisorbed on a silica carrier has been studied as a function of temperature in the range 1.7 < T < 700K. The mean particle size was obtained from the blocking temperature in good agreement with results deduced from magnetization measurements. A slightly sintered specimen shows the typical behaviour of bulk nickel. The remarkable thermostability of the small particles seems to be of considerable interest.