Abstract
Pr3 In exhibits an antiferromagnetic transition at ∼12 K. This transition appears to occur due to the exchange-generated admixture of higher lying crystal field levels into the singlet ground state. It is thus an example of an induced moment antiferromagnet. To provide detailed understanding of the magnetic behavior of Pr3 In, we have measured the magnetic excitation spectrum with inelastic neutron scattering experiments. We observe a clear dispersion of a crystal field excitation at 4 K. Above 100 K, the dispersion of the crystal field excitation has largely vanished and a crystal field scheme for Pr in a cubic site symmetry (in which the lowest states are a 1 singlet and a 4 triplet) provides a good approximation to the data.
| Original language | English |
|---|---|
| Article number | 09D505 |
| Journal | Journal of Applied Physics |
| Volume | 101 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2007 |
Funding
Work at UC Irvine was supported by the U.S. Department of Energy (DOE) under Grant No. DE-FG03-03ER46036. Oak Ridge National Laboratory is managed by UT-Battelle, for the DOE under Contract No. DE-AC05-00OR22725. Work at Los Alamos was performed under the auspices of the DOE. The work performed at the Intense Pulsed Neutron Source was supported by the DOE, under Contract No. W-31-109-ENG-38.