This title appears in the Scientific Report :
2023
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.108.L060403 in citations.
Please use the identifier: http://dx.doi.org/10.34734/FZJ-2023-03648 in citations.
Anisotropic magnetodielectric coupling in layered antiferromagnetic FePS 3
Anisotropic magnetodielectric coupling in layered antiferromagnetic FePS 3
We report anisotropic magnetodielectric coupling in layered van der Waals antiferromagnetic FePS3 (Néel temperature TN∼ 120 K) with perpendicular anisotropy. Above TN, while the dielectric response function along the c axis shows frequency-dependent relaxations, in-plane data is frequency independen...
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Personal Name(s): | Ghosh, Anudeepa |
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Birowska, Magdalena / Ghose, Pradeepta Kumar / Rybak, Miłosz / Maity, Sujan / Ghosh, Somsubhra / Das, Bikash / Dey, Koushik / Bera, Satyabrata / Bhardwaj, Suresh / Nandi, Shibabrata / Datta, Subhadeep (Corresponding author) | |
Contributing Institute: |
Streumethoden; JCNS-2 JARA-FIT; JARA-FIT Streumethoden; PGI-4 |
Published in: | Physical review / B, 108 (2023) 6, S. L060403 |
Imprint: |
Woodbury, NY
Inst.
2023
|
DOI: |
10.1103/PhysRevB.108.L060403 |
DOI: |
10.34734/FZJ-2023-03648 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) (FZJ) Materials – Quantum, Complex and Functional Materials |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.34734/FZJ-2023-03648 in citations.
We report anisotropic magnetodielectric coupling in layered van der Waals antiferromagnetic FePS3 (Néel temperature TN∼ 120 K) with perpendicular anisotropy. Above TN, while the dielectric response function along the c axis shows frequency-dependent relaxations, in-plane data is frequency independent and reveals a deviation from phonon-anharmonicity in the ordered state, thereby implying a connection to spin-phonon coupling known to be indicative of onset of magnetic ordering. At low temperature (below 40 K), atypical anomaly in the dielectric constant is corroborated with temperature-dependent dc and ac susceptibility. The magnetodielectric response across this anomaly differs significantly for both in-plane and out-of-plane cases. We have explained this in terms of preferential orientation of magnetic antiferromagnetic zigzag alignment, implied by the in-plane structural anisotropy as confirmed by ab initio calculations. Controlling the relative strength of magnetodielectric coupling with magnetic anisotropy opens a strategy for tracking subtle modifications of structures, such as in-plane anisotropy, with potential applications for spintronic technologies. |