Abstract
Mössbauer-effect investigations under applied magnetic field and magnetization studies of neptunium intermetallics in their paramagnetic state are reported. It is shown that the bulk and local susceptibilities at 4.2 K ( and , respectively) agree even for highly hybridized 5f-electron systems. The results indicate dominant orbital contributions to the magnetic moment also for paramagnetic neptunium heavy-fermion compounds. For these Np systems proportionalities between , , density of states at the Fermi energy, and the isomer shift are pointed out.
- Received 2 August 1989
DOI:https://doi.org/10.1103/PhysRevLett.63.2413
©1989 American Physical Society