| Autor: |
T. Goto, D. T. Adroja, Hideaki Kitazawa, Y. Isikawa, Karel Prokes, Pascal Manuel |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Journal of Magnetism and Magnetic Materials. 310:e28-e30 |
| ISSN: |
0304-8853 |
| DOI: |
10.1016/j.jmmm.2006.10.071 |
| Popis: |
The heavy-fermion compound CePdAl adopting the hexagonal ZrNiAl type of structure (space group P-62m) orders at ambient pressure antiferromagnetically below 2.7 K with an incommensurate propagation vector q =(0.5 0 τ ), τ ≅0.35. Two, of the three Ce atoms in the hexagonal unit cell carry magnetic moment of about 1.6–1.8 μ B , while the remaining one remains frustrated down to at least 35 mK. The application of hydrostatic pressure leads to a suppression of the long-range magnetic order above the critical pressure P c . The results of neutron diffraction experiments under pressure suggest a value of P c =0.75 (5) GPa as compared with 0.95 GPa determined from the bulk measurements. At pressures lower than P c , the magnetic structure of CePdAl seems to be quite robust with a very little temperature-dependent propagation vector and unusual dependence of the magnetic moment. The P – T phase diagram has been constructed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect