The crystal and magnetic structures of the ${\text{TbNi}}_2\text{Mn}$ compound have been refined by the Rietveld analysis of neutron powder-diffraction data. The compound has a cubic C15b-type structure, in which Mn atoms partially occupy both the $4a$ and $16e$ sites. Bulk magnetization measurements revealed magnetic ordering below the Curie temperature $T_{\mathrm{C}}=142\text{K}$. The values of magnetic moment are different for the Tb ion at the $4a$ and $4c$ positions. In the $4c$ site, the Tb moment is determined to be $5.4{\mu }_{\mathrm{B}}/\text{Tb}\text{ion}$. The low value of the Tb-ion moment is indicative of the formation of a random magnetic anisotropy.

We have investigated high field magnetization on single-crystalline CeFe ₂ Ge ₂ which is classified as a heavy fermion with a non-magnetic ground state. A clear metamagnetic anomaly, which resembles those reported in CeRu ₂ Si ₂ , was observed around 300 kOe for the field along the c -axis. The T ^3/2 dependence of the electrical resistivity in a wide temperature range from around 15 K down to 2 K, followed by T ² dependence at lower temperatures, is apparently similar to that in CeNi ₂ Ge ₂ which is close to a quantum critical point.

The effect of the composition and annealing temperature on the structure and magnetic properties of soft magnetic nanocrystalline Fe-Cu-Nb-Mo-Si-B alloys has been studied. An increase in the iron...