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Bera, Satyabrata; Pradhan, Suman Kalyan; Pal, Riju; Pal, Buddhadeb; Bera, Arnab; Kalimuddin, Sk; Das, Mrinmoy; Roy, Deep Singha; Afzal, Hasan; Pal, Atindra Nath; Mondal, Mintu

doi:10.1016/j.jmmm.2023.171052

Cited by 5 publications

(1 citation statement)

References 67 publications

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“…58 Despite that, the H c of Fe 3 GeTe 2 typically does not surpass 100 Oe. 65 A significant H c of ∼550 mT in 10.4 nm Fe 3 GeTe 2 at 2 K has been observed by Tan et al , suggesting that thinner Fe 3 GeTe 2 exhibits stronger H c , which is a hint of the presence of hard ferromagnetism in Fe 3 GeTe 2 . 66 By analyzing the Stoner model and conducting calculations, Chen et al 13 uncovered that the magnetism of monolayer Fe 3 GeTe 2 is spontaneously induced, and it arises from the magnetic anisotropy stemming from the energy difference of itinerant electrons with various magnetizations affected by the crystal field.…”

Section: Fundamentals Of Fe3x(x=ge and Ga)te2mentioning

confidence: 79%

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Chen,

Zhang,

Xiang

2024

Nanoscale

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Section: Fundamentals Of Fe3x(x=ge and Ga)te2mentioning

confidence: 79%

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Chen,

Zhang,

Xiang

2024

Nanoscale

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Disentangling the Unusual Magnetic Anisotropy of the Near‐Room‐Temperature Ferromagnet Fe₄GeTe₂

Pal,

Abraham,

Mistonov

et al. 2024

Adv Funct Materials

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In the quest for 2D conducting materials with high ferromagnetic ordering temperature the new family of the layered FenGeTe2 compounds, especially the near‐room‐temperature ferromagnet Fe4GeTe2, receives a significant attention. Fe4GeTe2 features a peculiar spin reorientation transition at TSR ≈ 110 K suggesting a non‐trivial temperature evolution of the magnetic anisotropy (MA)—one of the main contributors to the stabilization of the magnetic order in the low‐dimensional systems. An electron spin resonance (ESR) spectroscopic study reported here provides quantitative insights into the unusual magnetic anisotropy of Fe4GeTe2. At high temperatures the total MA is mostly given by the demagnetization effect with a small contribution of the counteracting intrinsic magnetic anisotropy of an easy‐axis type, whose growth below a characteristic temperature Tshape ≈ 150 K renders the sample seemingly isotropic at TSR. Below one further temperature Td ≈ 50 K the intrinsic MA becomes even more complex. Importantly, all the characteristic temperatures found in the ESR experiment match those observed in transport measurements, suggesting an inherent coupling between magnetic and electronic degrees of freedom in Fe4GeTe2. This finding together with the observed signatures of the intrinsic two‐dimensionality should facilitate optimization routes for the use of Fe4GeTe2 in the magneto‐electronic devices, potentially even in the monolayer limit.

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Nonlinear Optical Properties of 2D vdW Ferromagnetic Nanoflakes for Magneto‐Optical Logic Applications

Bera,

Kalimuddin,

Bera

et al. 2024

Advanced Optical Materials

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Abstract2D magnetic materials are garnering significant interest due to their high carrier mobilities, valley pseudospins, tunable bandgaps, and novel spin textures enabling exciting opportunities to explore unique nonlinear optical phenomena and develop next‐generation magneto‐optic and optoelectronic devices. Recently, the FenGeTe2 (FnGT) family of 2D magnets has emerged as a promising candidate for spintronic applications due to their non‐trivial spin textures in low dimensions compared to bulk materials. A coherent interaction is reported between light and suspended FnGT nanoflakes (NFs), resulting in spatial self‐phase modulation (SSPM), a direct manifestation of the optical Kerr effect. The nonlinear refractive index (n2) and third‐order optical susceptibility (χ(3)) are quantitatively estimated from the self‐diffraction patterns of FnGT NFs. The time evolution of the self‐diffraction patterns aligns with the “wind‐chime” model, and the deformation of rings is analyzed in terms of thermal effects. FnGT systems exhibit strong optical non‐linearity (χ(3) ∼ 10−8 esu), an order of magnitude higher than other metal dichalcogenides and 2D magnets. Furthermore, all‐optical logic gates have been realized using cross‐phase modulation. The FnGT family of 2D magnets, with their high curie temperature and robust higher‐order optical nonlinearities, are promising candidates for future magneto‐optical and optoelectronic device applications.

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Enhanced coercivity and emergent spin-cluster-glass state in 2D ferromagnetic material, Fe3GeTe2

Cited by 5 publications

References 67 publications

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Disentangling the Unusual Magnetic Anisotropy of the Near‐Room‐Temperature Ferromagnet Fe₄GeTe₂

Nonlinear Optical Properties of 2D vdW Ferromagnetic Nanoflakes for Magneto‐Optical Logic Applications

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Enhanced coercivity and emergent spin-cluster-glass state in 2D ferromagnetic material, Fe3GeTe2

Cited by 5 publications

References 67 publications

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe3X(X=Ge and Ga)Te2 and their heterostructures for spintronics

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe3X(X=Ge and Ga)Te2 and their heterostructures for spintronics

Disentangling the Unusual Magnetic Anisotropy of the Near‐Room‐Temperature Ferromagnet Fe4GeTe2

Nonlinear Optical Properties of 2D vdW Ferromagnetic Nanoflakes for Magneto‐Optical Logic Applications

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Product

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About

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Recent advances in two-dimensional intrinsic ferromagnetic materials Fe₃X(X=Ge and Ga)Te₂ and their heterostructures for spintronics

Disentangling the Unusual Magnetic Anisotropy of the Near‐Room‐Temperature Ferromagnet Fe₄GeTe₂