Magnetization Density in Ferromagnetic TiBe1.8Cu0.2

The distribution of magnetization in the weak itinerant ferromagnetic Ti${\mathrm{Be}}_{1.8}$ ${\mathrm{Cu}}_{0.2}$ has been determined by polarized-neutron diffraction. The magnetization resides on the titanium sites forming an interlocked tetrahedral network. No magnetization is present at the beryllium sites, into which copper goes substitutionally.