CrTa2S6

CrTa₂S₆ – Layered Chiral Helimagnetic Semiconductor

Chemical Formula: CrTa₂S₆
Crystal Structure: Hexagonal (P6₃22, chiral non-centrosymmetric)
Purity: ≥ 99.999% (metals basis)
Availability: High-quality plate-like single crystals
For inquiries and orders: contact@xtalsphere.com

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Overview

CrTa₂S₆ is a quasi-two-dimensional chiral magnetic semiconductor belonging to the transition-metal dichalcogenide (TMD) family, where Cr³⁺ ions are intercalated between TaS₂ layers.
This compound exhibits chiral helimagnetism due to the Dzyaloshinskii–Moriya (DM) interaction, making it a prototype material for studying magnetic skyrmions, topological spin textures, and magnetoelectric coupling in noncentrosymmetric systems.

Its layered structure allows easy exfoliation, enabling device fabrication for 2D spintronics and magneto-optical studies.

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Synthesis & Crystal Growth

Xtalsphere produces high-purity CrTa₂S₆ single crystals using the chemical vapor transport (CVT) method.
High-purity Cr, Ta, and S elements (≥99.999%) are sealed in evacuated quartz tubes with iodine as a transport agent and subjected to a temperature gradient (950 °C → 850 °C) for 7–10 days.
The resulting crystals are silver-golden, hexagonal plates with metallic luster and smooth cleavage along the ab-plane.

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Characterization

• XRD (Powder & Single Crystal): Confirms phase-pure hexagonal P6₃22 structure with no detectable impurities.

• SEM & EDS: Reveal uniform surface morphology and near-ideal stoichiometry.

• Raman Spectroscopy: Identifies multiple A₁g and E₂g modes characteristic of chiral TMD stacking.

• Laue Diffraction: Used for orientation prior to magnetotransport measurements.

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Magnetic & Transport Properties

• Magnetic Ordering: Helimagnetic order below Tₙ ≈ 40 K.

• Magnetic Phase Transitions: Under external field, CrTa₂S₆ exhibits metamagnetic and skyrmion-lattice phases, observable in magnetization and Hall measurements.

• Resistivity (ρ–T): Semiconducting behavior with weak localization at low temperatures.

• Hall Effect: Nonlinear anomalous Hall response indicating topological spin textures.

• Magnetoresistance: Exhibits spin reorientation transitions and chiral anomalies under applied fields.

All properties are verified using PPMS (Quantum Design) and SQUID-VSM instrumentation.

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Purity & Quality

• Synthesized from ultra-high-purity elemental sources

• Verified phase purity by XRD and EDS

• Oxygen and halogen impurities below 0.01 wt%

• Supplied with batch-specific structural and magnetic data

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Applications

• 2D chiral magnetism and skyrmion studies

• Topological Hall effect and spintronic device research

• Magneto-optical Kerr effect (MOKE) investigations

• Suitable for thin flake exfoliation and heterostructure fabrication

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Contact

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