Magnetic form factor of URu2Si2

• Published in: Physica. B, Condensed matter Vol. 378-80; pp. 581 - 582
• Main Authors: KUWAHARA, K, KOHGI, M, IWASA, K, NISHI, M, NAKAJIMA, K, YOKOYAMA, M, AMITSUKA, H
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Amsterdam Elsevier 01.05.2006
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic properties and materials; Physics; Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.); Polarized neutron; Magnetization; Intermetallic compounds; 74.70.Dd; Magnetic form factor; Magnetic field effects; Heavy fermions; Ruthenium alloys; 74.70.Tx; Polarized neutrons; Form factors; Neutron diffusion; 61.12.-q URu2S#2; Silicon alloys; Dipole approximation; Uranium alloys
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2006.01.490

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 60K by applying a magnetic field of 6T 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 is smaller than the bulk magnetization value (0.10muB/U). Therefore, this result indicates some contribution other than 5f electrons to the bulk magnetization of URu2Si2.