Magnetic properties offrom Mössbauer and neutron-diffraction studies
- 1 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (1) , 207-216
- https://doi.org/10.1103/physrevb.46.207
Abstract
Neutron-diffraction and Mössbauer measurements on are reported. Below 34 K, presents a ferrimagnetic structure, while above 40 K an antiferromagnetic order of the Mn moments is inferred. Between 34 and 40 K, these two magnetic phases coexist with an intermediate magnetic phase, the ordered Mn and Dy moments being aligned along the c axis. The saturation hyperfine parameters reveal a fairly pure ‖15/2〉 ground state, i.e., a Dy moment of 10. The experimental data explained in the framework of exchange and crystal-field Hamiltonians allowed us to determine the second-() and fourth-order ( and ‖‖) crystal-field parameters as well as the Dy-Dy, Dy-Mn, and Mn-Mn exchange integrals.
Keywords
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