Pressure tuning of competing magnetic interactions in intermetallic CeFe2
| Title | Pressure tuning of competing magnetic interactions in intermetallic CeFe2 |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Wang JY, Feng YJ, Jaramillo R, van Wezel J, Canfield PC, Rosenbaum TF |
| Journal Title | Physical Review B |
| Volume | 86 |
| Pages | 014422 |
| Date Published | 07 |
| Type of Article | Article |
| ISBN Number | 1098-0121 |
| Accession Number | WOS:000306601400001 |
| Keywords | ce(fe1-xalx)2, ce(fe1-xcox)2, instability, laves phase-compounds, substitutions |
| Abstract | We use high-pressure magnetic x-ray diffraction and numerical simulation to determine the low-temperature magnetic phase diagram of stoichiometric CeFe2. Near 1.5 GPa we find a transition from ferromagnetism to antiferromagnetism, accompanied by a rhombohedral distortion of the cubic Laves crystal lattice. By comparing pressure and chemical substitution we find that the phase transition is controlled by a shift of magnetic frustration from the Ce-Ce to the Fe-Fe sublattice. Notably the dominant Ce-Fe magnetic interaction, which sets the temperature scale for the onset of long-range order, remains satisfied throughout the phase diagram but does not determine the magnetic ground state. Our results illustrate the complexity of a system with multiple competing magnetic energy scales and lead to a general model for magnetism in cubic Laves phase intermetallic compounds. |
| URL | <Go to ISI>://WOS:000306601400001 |
| DOI | 10.1103/PhysRevB.86.014422 |
| Alternate Journal | Phys. Rev. B |
