| Title | Spiral magnetic ordering of the Eu moments in EuNi2As2 |
| Authors | Jin, W. T. Qureshi, N. Bukowski, Z. Xiao, Y. Nandi, S. Babij, M. Fu, Z. Su, Y. Brueckel, Th |
| Affiliation | Forschungszentrum Julich, Heinz Maier Leibnitz Zentrum MLZ, JCNS, Lichtenbergstr 1, D-85747 Garching, Germany Inst Laue Langevin, 71 Rue Martyrs,BP156, F-38042 Grenoble 9, France Polish Acad Sci, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland Peking Univ, Sch Adv Mat, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India Forschungszentrum Julich, JCNS, D-52425 Julich, Germany Forschungszentrum Julich, JARA FTT, PGI, D-52425 Julich, Germany |
| Issue Date | 2019 |
| Publisher | PHYSICAL REVIEW B |
| Abstract | The ground-state magnetic structure of EuNi2As2 was investigated by single-crystal neutron diffraction. At base temperature, the Eu2+ moments are found to form an incommensurate antiferromagnetic spiral-like structure with a magnetic propagation vector of k = (0, 0, 0.92). They align ferromagnetically in the ab plane with the moment size of 6.75(6)mu(B), but rotate spirally by 165.6(1)degrees around the c axis from layer to layer. The magnetic order parameter in the critical region close to the ordering temperature T-N = 15 K shows critical behavior with a critical exponent of beta(Eu) = 0.35(2), consistent with the three-dimensional Heisenberg model. Moreover, within the experimental uncertainty, our neutron data are consistent with a model in which the Ni sublattice is not magnetically ordered. |
| URI | http://hdl.handle.net/20.500.11897/551369 |
| ISSN | 2469-9950 |
| DOI | 10.1103/PhysRevB.99.014425 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 新材料学院 |
