Magnetic correlations in the triangular antiferromagnet FeGa₂S₄
The crystal structure and magnetic correlations in triangular antiferromagnet FeGa₂S₄ are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction, and neutron inelastic scattering. We report significant mixing at the cation sites and disentangle magnetic properties dominated by ma...
| Autores principales: | , , , , , , , , , , , , , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2021
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/142313 |
| Aporte de: |
| id |
I19-R120-10915-142313 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física Crystal structure Magnetic interactions Inelastic neutron scattering Neutron diffraction Susceptibility measurements X-ray diffraction |
| spellingShingle |
Ciencias Exactas Física Crystal structure Magnetic interactions Inelastic neutron scattering Neutron diffraction Susceptibility measurements X-ray diffraction Guratinder, K. Schmidt, Martin Walker, Helen Bewley, R. I. Wörle, Michael Cabra, Daniel Carlos Osorio, Santiago Antonio Villalba, Martín Emilio Madsen, A. K. Keller, Lukas Wildes, Andrew Puphal, Pascal Cervellino, Antonio Rüegg, C. Zaharko, Oksana Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| topic_facet |
Ciencias Exactas Física Crystal structure Magnetic interactions Inelastic neutron scattering Neutron diffraction Susceptibility measurements X-ray diffraction |
| description |
The crystal structure and magnetic correlations in triangular antiferromagnet FeGa₂S₄ are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction, and neutron inelastic scattering. We report significant mixing at the cation sites and disentangle magnetic properties dominated by major and minor magnetic sites. The magnetic short-range correlations at 0.77 Å⁻¹ correspond to the major sites and being static at base temperature they evolve into dynamic correlations around 30–50 K. The minor sites contribute to the magnetic peak at 0.6 Å⁻¹, which vanishes at 5.5 K. Our analytical studies of triangular lattice models with bilinear and biquadratic terms provide the ratios between exchanges for the proposed ordering vectors. The modeling of the inelastic neutron spectrum within linear spin-wave theory results in the set of exchange couplings J₁ = 1.7, J₂ = 0.9, J₃ = 0.8 meV for the bilinear Heisenberg Hamiltonian. However, not all features of the excitation spectrum are explained with this model. |
| format |
Articulo Articulo |
| author |
Guratinder, K. Schmidt, Martin Walker, Helen Bewley, R. I. Wörle, Michael Cabra, Daniel Carlos Osorio, Santiago Antonio Villalba, Martín Emilio Madsen, A. K. Keller, Lukas Wildes, Andrew Puphal, Pascal Cervellino, Antonio Rüegg, C. Zaharko, Oksana |
| author_facet |
Guratinder, K. Schmidt, Martin Walker, Helen Bewley, R. I. Wörle, Michael Cabra, Daniel Carlos Osorio, Santiago Antonio Villalba, Martín Emilio Madsen, A. K. Keller, Lukas Wildes, Andrew Puphal, Pascal Cervellino, Antonio Rüegg, C. Zaharko, Oksana |
| author_sort |
Guratinder, K. |
| title |
Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| title_short |
Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| title_full |
Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| title_fullStr |
Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| title_full_unstemmed |
Magnetic correlations in the triangular antiferromagnet FeGa₂S₄ |
| title_sort |
magnetic correlations in the triangular antiferromagnet fega₂s₄ |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/142313 |
| work_keys_str_mv |
AT guratinderk magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT schmidtmartin magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT walkerhelen magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT bewleyri magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT worlemichael magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT cabradanielcarlos magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT osoriosantiagoantonio magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT villalbamartinemilio magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT madsenak magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT kellerlukas magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT wildesandrew magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT puphalpascal magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT cervellinoantonio magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT rueggc magneticcorrelationsinthetriangularantiferromagnetfega2s4 AT zaharkooksana magneticcorrelationsinthetriangularantiferromagnetfega2s4 |
| bdutipo_str |
Repositorios |
| _version_ |
1764820459315003394 |