A detailed investigation of the thermodynamic, structural, and magnetic properties of high quality polycrystalline PrMn 2O 5 samples are presented. In contrast with members of the RMn 2O 5 family with smaller rare-earth ions, PrMn 2O 5 is not ferroelectric and does not undergo a transition to an incommensurate (q x, 0, q z) magnetic phase: It exhibits two magnetic transitions, corresponding to commensurate magnetic orderings at T 1=25±1 K and T 2=18±1 K. These two magnetic transitions are characterized by two orthogonal propagation vectors q 1=(12,0,0) and q 2=(0,0,12), respectively, which coexist below T 2. The refinement of the neutron data show that Mn3 + order primarily at T 1, following q 1; below T 2, the Mn4 + sublattice orders following q 2.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Nov 19 2012|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics