Note on the formation and the magnetic properties of amorphous Eu-Ag alloys

Results are reported of an investigation of several amorphous alloys of Eu and Ag made by melt spinning. The crystallization temperatures were determined by differential scanning calorimetry. By means of magnetic measurements it was established that the Eu ions are divalent in all amorphous Eu-Ag alloys. In order to compare the magnetic coupling in the amorphous alloys with that in crystalline compounds, an investigation was also made of the magnetic properties of the compounds Eu 3Si 2 (tetragonal, U 3Si 2-type) and EuAg (orthohombic, FeB-type). Their magnetic properties and lattice constants are given together with those of the compounds EuAg 2 and EuAg 5.