X-ray magnetic circular dichroism (XMCD) measurements performed at the Rh $L_{2,3}$ edges and Pd $L_3$ edge in ${\mathrm{Fe}}_{0.51}{\mathrm{Rh}}_{0.49}$ and ${\mathrm{Fe}}_{1.005}({\mathrm{Rh}}_{0.85}{\mathrm{Pd}}_{0.15}{)}_{0.995}$ evidence the instability of the Rh magnetic moment $\left({\mu }_{\mathrm{Rh}}\right)$ through the ferromagnetic-antiferromagnetic transition and demonstrate the induced nature of both ${\mu }_{\mathrm{Rh}}$ and ${\mu }_{\mathrm{Pd}}.$ In the case of ${\mathrm{Fe}}_{0.51}{\mathrm{Rh}}_{0.49}$ these experiments have also revealed the existence of a ferromagnetic ground state at low temperatures in which ${\mu }_{\mathrm{Rh}}\sim 0.7{\mu }_B.$

• Received 4 September 1998

DOI:https://doi.org/10.1103/PhysRevB.59.3306