Iron Phosphorus Trisulfide (FePS3) Powder and Crystals

Iron phosphorus trisulfide (FePS₃) belongs to the family of transition metal phosphorus trichalcogenides (MPX₃). FePS₃ contains Fe, S and P which are all earth abundant elements. In its bulk form, FePS₃ is a layer structured antiferromagnetic semiconductor and can be exfoliated into few-layer 2D nanosheets. It is commonly referred to as 'magnetic graphene'.

FePS₃ is a good example of a low-temperature 2D antiferromagnetic insulator that can be tuned with pressure into an exotic metallic state. Under compression, the layered structure simultaneously undergoes large in-plane lattice collapses, abrupt spin-crossovers and insulator-metal transitions. Raman spectroscopy reveals that FePS₃ exhibits an Ising-type antiferromagnetic ordering down to the monolayer limit, suggesting that intra-layer spin interaction dominates the magnetic structure of FePS₃.

We supply low price iron phosphorus trisulfide - or magnetic graphene - powder and crystals.

Iron Phosphorus Trisulfide Powder

Can be used for preparation of iron phosphorus trisulfide nanoplates and ultrathin films

Available in quantities of 1 g

≥99.995% purity

From £320

Iron phosphorus trisulfide Crystals by Size

Can be used to produce single or few-layer iron phosphorus trisulfide sheets via mechanical or liquid exfoliation

Small (≥10 mm²) or medium (≥25 mm²) crystals available*

≥99.999% purity

From £480

*Typical representative size, areas/dimensions may vary

Bulk single iron phosphorus trisulfide crystal is most commonly used as sources from which single or few-layer sheets can be obtained via either mechanical or liquid exfoliation. Single iron phosphorus trisulfide crystals, or films produced from such crystals, are suitable for study using atomic force microscopy or transmission electron microscopy.

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Few-layer FePS₃ nanosheets and nanoparticles can also obtained from iron phosphorus trisulfide powder by liquid-exfoliation.

Key Product Data

• High purity, low price iron phosphorus trisulfide
• Magnetic material with 2D structure (hence 'magnetic graphene')
• Available in powdered or crystal form

Structure of Iron Phosphorus Trisulfide

FePS₃ is a cation-ordered CdCl₂ type low-dimensional layered magnetic semiconductor. FePS₃ crystal has a monoclinic structure with the factor group C_2h. In each unit cell, the magnetic Fe atoms are octahedrally coordinated to six S atoms with a small trigonal distortion. The P atom is coordinated to three S atoms and one P atom to form a [P₂S₆]^4- unit. The [P₂S₆]^4- units are connected with six Fe atoms, which are arranged in a honeycomb plane structure.

Properties of Iron Phosphorus Trisulfide

After exfoliation of iron phosphorus trisulfide crystal or powder, FePS₃ typically has the following properties:

• ‎Monoclinic (space group: C2/m)
• Transition metal phosphorus trichalcogenides (MPX₃)
• Antiferromagnetic semiconductor with Ising-type antiferromagnetic ordering down to the monolayer limit
• Insulator-metal transitions under compression

Applications of Iron Phosphorus Trisulfide

Iron phosphorus trisulfide (FePS₃) single crystals can be used to prepare monolayer and few-layer FePS₃ by mechanical or liquid exfoliation. The powdered form is suitable for liquid chemical exfoliation to prepare nanosheets and nanoparticles down to few-layer films.

Iron phosphorus trisulfide quantum sheets are excellent and highly stable trifunctional electrocatalyst for hydrogen evolution, oxygen evolution, and oxygen reduction reactions. Iron phosphorus trisulfide has great potential in robust data storage and high-speed data processing applications, as well as applications in energy generation and storage.

Iron phosphorus trisulfide quantum sheets are excellent and highly stable trifunctional electrocatalyst for hydrogen evolution, oxygen evolution, and oxygen reduction reactions. Magnetic graphene has great potential in robust data storage and high-speed data processing applications, as well as applications in energy generation and storage.

Processing of Magnetic Graphene

Viscoelastic transfer using PDMS

Literature and Reviews

• Metal-insulator transition in Mott-insulator FePS3, M. Tsurubayashi et al., AIP Adv., 8, 101307 (2018); doi: 10.1063/1.5043121.
• Crystallographic and magnetic properties of van der Waals layered FePS3 crystal, Q. Xie et al., Chin. Phys. B, 28 (5), 056102 (2019); DOI: 10.1088/1674-1056/28/5/056102.
• Layered Trichalcogenidophosphate: A New Catalyst Family for Water Splitting, C. Du et al., Nano-Micro Lett., 10:67 (2018); doi: 10.1007/s40820-018-0220-6.
• Fabrication and Characterization Single Crystal of FePS3 Layered Material, A. El-Meligi et al., IARJSET, 117-120 (2015); DOI 10.17148/IARJSET.2015.21221.
• Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnet FePS3, D. Lancon et al., Phys. Rev. B, 94, 214407 (2016); DOI: 10.1103/PhysRevB.94.214407.
• Magnetic Isotropy/Anisotropy in Layered Metal Phosphorous Trichalcogenide MPS3 (M = Mn, Fe)Single Crystals, Z. Rehman et al., Micromachines, 9, 292 (2018); doi:10.3390/mi9060292.
• Ising-Type Magnetic Ordering in Atomically Thin FePS3, J. Lee et al., Nano Lett., 16 (12), 7433-7438 (2016); doi: 10.1021/acs.nanolett.6b03052.
• Two Dimensional, Few Layer Phosphochalcogenide, FePS3: A New Catalyst For Electrochemical Hydrogen Evolution Over Wide pH Range, D. Mukherjee et al., ACS Energy Lett., 1 (2), 367-372 (2016); DOI: 10.1021/acsenergylett.6b00184.
• Pressure-Induced Electronic and Structural Phase Evolution in the van der Waals Compound FePS3, C. Haines et al., Phys. Rev. Lett., 121, 266801 (2018); DOI: 10.1103/PhysRevLett.121.266801.
• Emergent superconductivity in an iron-based honeycomb lattice initiated by pressure-driven spin-crossover, Y. Wang et al., Nat. Commun., 9, 1914 (2018); DOI: 10.1038/s41467-018-04326-1.
• Raman spectroscopy of atomically thin two-dimensional magnetic iron phosphorus trisulfide (FePS3) crystals, X. Wang et al., 2D Mater. 3, 031009 (2016); doi: 10.1088/2053-1583/3/3/031009.