We report the field-induced magnetic form factor of the heavy-electron system URu2Si2 obtained by using polarized neutrons. The neutron experiments were performed on the two single crystals at 60 K by applying a magnetic field of 6 T along the tetragonal c-axis. The observed magnetic form factor is close to the theoretical 5f form factor of the free U3 + or U4 + ions calculated by the dipole approximation as other U-based intermetallic superconductors. However, the extrapolated value at sin θ / λ = 0 ( 0.07 μB / U ) is smaller than the bulk magnetization value ( 0.10 μB / U ). Therefore, this result indicates some contribution other than 5f electrons to the bulk magnetization of URu2Si2.
- Magnetic form factor
- Polarized neutrons
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering