Crystallographic features related to a van der Waals coupling in the layered chalcogenide FePS3

Murayama, Chisato; Okabe, Momoko; Urushihara, Daisuke; Asaka, Toru; Fukuda, Koichiro; Isobe, Masahiko; Yamamoto, Kazuo; Matsushita, Yoshitaka

doi:10.1063/1.4961712

Cited by 49 publications

(53 citation statements)

References 15 publications

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“…The twinning is consistent with recent observations using x-ray and electron diffraction [18]. The sample predominantly consisted of one domain, however, with population ratios between the domains of 0.78 : 0.13 : 0.09.…”

Section: Neutron Diffractionsupporting

confidence: 91%

“…Allowing for inequivalent exchange interactions between equivalent neighbors might be a consideration. This may be justified as the magnetic phase transition is believed to be first order, with a concomitant distortion of the lattice at T N as observed in x-ray diffraction [18,41].…”

Section: Discussionmentioning

confidence: 91%

“…The presence of these domains has been discussed at length in a recent article by Murayama et al [18]. Figure 11(a) shows the arrangement of Fe 2+ ions in the ab plane.…”

Section: Appendix: Indexing In the Presence Of Twinned Domainsmentioning

confidence: 89%

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Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

et al. 2016

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Neutron scattering from single crystals has been used to determine the magnetic structure and magnon dynamics of FePS 3 , an S = 2 Ising-like quasi-two-dimensional antiferromagnet with a honeycomb lattice. The magnetic structure has been confirmed to have a magnetic propagation vector of k M = [ 01 1 2 ] and the moments are collinear with the normal to the ab planes. The magnon data could be modeled using a Heisenberg Hamiltonian with a single-ion anisotropy. Magnetic interactions up to the third in-plane nearest neighbor needed to be included for a suitable fit. The best fit parameters for the in-plane exchange interactions were J 1 = 1.46, J 2 = −0.04, and J 3 = −0.96 meV. The single-ion anisotropy is large, = 2.66 meV, explaining the Ising-like behavior of the magnetism in the compound. The interlayer exchange is very small, J = −0.0073 meV, proving that FePS 3 is a very good approximation to a two-dimensional magnet.

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Section: Neutron Diffractionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 91%

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Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

et al. 2016

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“…Fe atoms and P atoms are sandwiched between S atoms layers to form the layer-shaped FePS 3 monoclinic symmetrical C2/m structure 9 . The lattice parameters are that a = 5.947 Å, b = 10.300 Å, c = 6.7222 Å, and β = 107.16° 21 . Optical microscope is used to identify the FePS 3 materials.…”

Section: Resultsmentioning

confidence: 99%

Surface modification of multilayer FePS3 by Ga ion irradiation

Shang-wu

Ouyang

et al. 2019

Sci Rep

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In order to investigate the modification of the surface structure of FePS3 via Ga+ ion irradiation, we study the effect of thickness and Raman spectrum of multilayer FePS3 irradiated for 0 μs, 30 μs, and 40 μs, respectively. The results demonstrate that the intensity ratio of characteristic Raman peaks are obviously related to the thickness of FePS3. After Ga+ ion irradiation, the FePS3 sample gradually became thinner and the Eu peak and Eg(v11) peak in the Raman spectrum disappeared and the peak intensity ratio of A1g(v2) with respect to A1g(v1) weakened. This trend becomes more apparent while increasing irradiation time. The phenomenon is attributed to the damage of bipyramid structure of [P2S6]4− units and the cleavage of the P-P bands and the P-S bands during Ga+ ion irradiation. The results are of great significance for improving the two-dimensional characteristics of FePS3 by Ga+ ion beam, including structural and optical properties, which pave the way of surface engineering to improve the performance of various two-dimensional layered materials via ion beam irradiation.

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“…The experimental pattern exhibits slightly different intensity ratios, which is caused by preferred orientation of the crystallites, a phenomenon well documented for layered materials. [42][43][44][45] Because X-ray diffraction is not very sensitive to minute impurities, the presence of tiny amounts of a second phase cannot be excluded.…”

Section: Characterisation Of the Bulk Materialsmentioning

confidence: 99%

Liquid Exfoliation of Ni₂P₂S₆: Structural Characterization, Size-Dependent Properties, and Degradation

et al. 2019

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Reducing the size of a material, from a bulk solid to a nanomaterial, may lead to drastic changes of various properties including reactivity and optical properties. Chemical reactivity is often increased due to the nanomaterial’s higher effective surface area, while confinement and geometric effects lead to systematic changes in optical properties. Here, we investigate the size-dependent properties of Ni2P2S6 nanosheets that were obtained from liquid phase exfoliation in N-cyclohexyl-2-pyrrolidone. The as-obtained stock dispersion was size-selected by liquid cascade centrifugation resulting in fractions with distinct size and thickness distributions, as quantified by statistical atomic force microscopy. Raman, TEM, XRD, and XPS characterization revealed that the exfoliated flakes have good crystallinity and high structural integrity across all sizes. The optical extinction and absorbance spectra systematically change with the lateral dimensions and layer number, respectively. Linking these changes to nanosheet dimensions allows us to establish quantitative metrics for size and thickness from optical properties. To gain insights into the environmental stability, extinction/absorbance behavior was followed as a function of time at different storage temperatures. Degradation is observed following first-order kinetics, and activation energies were extracted from the temperature dependent data. The decomposition is due to oxidation which appears to occur both at edges and on the basal plane.

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Crystallographic features related to a van der Waals coupling in the layered chalcogenide FePS3

Cited by 49 publications

References 15 publications

Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

Surface modification of multilayer FePS3 by Ga ion irradiation

Liquid Exfoliation of Ni₂P₂S₆: Structural Characterization, Size-Dependent Properties, and Degradation

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Crystallographic features related to a van der Waals coupling in the layered chalcogenide FePS3

Cited by 49 publications

References 15 publications

Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnetFePS3

Surface modification of multilayer FePS3 by Ga ion irradiation

Liquid Exfoliation of Ni2P2S6: Structural Characterization, Size-Dependent Properties, and Degradation

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Liquid Exfoliation of Ni₂P₂S₆: Structural Characterization, Size-Dependent Properties, and Degradation