%0 Journal Article
%A Ghosh, Anudeepa
%A Birowska, Magdalena
%A Ghose, Pradeepta Kumar
%A Rybak, Miłosz
%A Maity, Sujan
%A Ghosh, Somsubhra
%A Das, Bikash
%A Dey, Koushik
%A Bera, Satyabrata
%A Bhardwaj, Suresh
%A Nandi, Shibabrata
%A Datta, Subhadeep
%T Anisotropic magnetodielectric coupling in layered antiferromagnetic FePS 3
%J Physical review / B
%V 108
%N 6
%@ 2469-9950
%C Woodbury, NY
%I Inst.
%M FZJ-2023-03648
%P L060403
%D 2023
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001240619700002
%R 10.1103/PhysRevB.108.L060403
%U https://juser.fz-juelich.de/record/1015304