Co3Sn2S2

Co₃Sn₂S₂ – Topological Kagome Ferromagnet

Chemical Formula: Co₃Sn₂S₂
Crystal Structure: Rhombohedral (space group R-3m)
Purity: ≥ 99.999% (metals basis)
Availability: Oriented single crystal plates or cleaved flakes
For orders and inquiries: contact@xtalsphere.com

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Overview

Co₃Sn₂S₂ is a magnetic Weyl semimetal belonging to the Kagome-lattice family, known for its strong Berry curvature, large anomalous Hall effect (AHE), and high intrinsic thermoelectric performance.
It combines ferromagnetism (Tₙ ≈ 177 K) with topologically nontrivial electronic states, making it a cornerstone material for quantum transport, spintronic, and topological device research.

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Synthesis & Crystal Growth

Xtalsphere produces Co₃Sn₂S₂ single crystals using a self-flux technique under controlled temperature gradients to ensure stoichiometric precision and defect-free growth.
All raw elements (Co, Sn, S) are ≥99.999% pure.
The resulting crystals are metallic gray with mirror-like cleavage planes and excellent structural integrity.

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Characterization

• Powder & Single-Crystal XRD: Confirms phase purity and rhombohedral symmetry.

• SEM–EDS Mapping: Uniform elemental distribution (Co:Sn:S ≈ 3:2:2).

• Raman Spectroscopy: Distinct phonon modes confirming structural order.

• Laue Diffraction: Ensures crystallographic orientation for transport studies.

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Transport & Magnetic Properties

• Resistivity (ρ–T): Metallic conduction with a sharp kink near 177 K (ferromagnetic transition).

• Hall Effect: Large anomalous Hall conductivity (≈ 1100 S/cm) due to Weyl nodes.

• Magnetoresistance: Significant AHE and chiral-anomaly signatures under applied magnetic fields.

• Magnetization (M–T): Strong ferromagnetism with perpendicular magnetic anisotropy.

All measurements performed using PPMS and SQUID-VSM for precision and reproducibility.

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Purity & Quality Assurance

Xtalsphere ensures defect-free, research-grade crystals via:

• Controlled argon atmosphere synthesis

• ICP-MS and EDS stoichiometry validation

• No secondary phases or inclusions detected

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Applications

• Topological quantum transport studies

• Spintronic and magnetoelectric devices

• Berry-curvature and anomalous Hall investigations

• Thermoelectric and magnetic sensor research

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Send us a mail to get price quote contact@xtalsphere.com