Also called chromium(III) chloride
The chlorine member of the chromium trihalides, and the odd one out: its magnetic moments lie in the plane instead of pointing out of it. Each layer orders ferromagnetically by 17 K, and below 14 K the layers lock in opposite directions. Grown as a single layer on graphene it is a ferromagnet of the two-dimensional XY kind – the textbook case of spins confined to a plane. Thin flakes also show how stacking shapes magnetism: they skip the stacking change of bulk crystals and couple their layers about ten times more strongly. And unlike CrI3, its bulk crystals are stable in air and exfoliate easily.
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The XY member of the family: moments in the plane with only a small anisotropy, so a monolayer is the natural material for Berezinskii–Kosterlitz–Thouless physics, and in multilayers shape anisotropy outweighs the small magnetocrystalline term. Calculations reproduce the bulk structure only when magnetism is included, and van der Waals functionals find several nearly degenerate stackings and magnetic structures – consistent with thin flakes settling on a different stacking. Many-body perturbation theory gives exciton binding energies of up to 3 eV in a monolayer and about 2 eV in bulk, with an optical gap that barely depends on thickness.
The two magnetic transitions show up as anomalies in the heat capacity at 14 and 17 K. In thin flakes, tunnelling magnetoconductance follows the spin-flip and spin-flop transitions, with an even–odd effect in the number of layers, and polarisation-resolved Raman spectroscopy shows whether the bulk stacking transition has happened. Monolayers grown on graphene are studied by X-ray magnetic circular dichroism.
Ordering below 20 K rules out applications at practical temperatures. CrCl3 is valued as an air-stable, easily exfoliated magnetic insulator for heterostructure research, and as a tunnel barrier whose resistance tracks its magnetic state.
The newest items tagged CrCl3, from the news feed updated 22 Oct 2026.
Understanding quantum interactions in van der Waals magnets are critical to realizing their potential for next-generation magnetic, electronic, and spintronic applications. In this study, we investigated the evolution of exchange and dipole-dipole interactions in van der Waals magnet CrCl3 using multifrequency…
Simultaneous detection of the spectral and polarization properties of light is highly desirable for integrated imaging and photonic technologies but typically requires complex multi-component architectures. Here, we demonstrate that the intrinsic dielectric anisotropy of layered insulating CrCl3 enables ultrabroadband…
Two-dimensional magnetic materials offer unique opportunities for exploring low-dimensional spin phenomena and next-generation spintronic devices. Chromium trihalides CrX3 (X = Cl, Br, I) belong to an important family of these materials, where alloying opens pathways for tailoring their electronic, magnetic, optical…
Two-dimensional crystals with densely packed atoms exhibit a range of emerging properties, particularly a wide variety of excitonic behaviors. Thickness-variable layered chromium trihalides with finite surface recombination sites provide an ideal system for understanding how excitons confined in octahedral ligand…
Twisted moiré magnets are promising in exploring noncollinear magnetic phases, yet current experimental studies have been restricted to uniaxial magnets, limiting the accessible phase space. Here, we demonstrate noncollinear moiré magnetism based on XY magnet CrCl3. The tunneling magnetoconductance of twisted CrCl3…
All 11 items tagged CrCl₃ in the news feed · RSS feed for CrCl₃
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