1D Magnetic MX3 Single-Chains (M = Cr, V and X = Cl, Br, I)

doi:10.1002/adma.202307942

1D Magnetic MX3 Single-Chains (M = Cr, V and X = Cl, Br, I)

2023-10-28

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DOI：10.1002/adma.202307942

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Magnetic materials in reduced dimensions are not only excellent platforms for fundamental studies of magnetism, but they play crucial roles in technological advances. The discovery of intrinsic magnetism in monolayer 2D van der Waals systems has sparked enormous interest, but the single-chain limit of 1D magnetic van der Waals materials has been largely unexplored. This paper reports on a family of 1D magnetic van der Waals materials with composition MX3 (M = Cr, V, and X = Cl, Br, I), prepared in fully-isolated fashion within the protective cores of carbon nanotubes. Atomic-resolution scanning transmission electron microscopy identifies unique structures that differ from the well-known 2D honeycomb lattice MX3 structure. Density functional theory calculations reveal charge-driven reversible magnetic phase transitions.

Keywords:

1D materials

atomic chain

density functional theory

magnetic chain

nanotubes

transition metal halide

transmission electron microscopy

1D Magnetic MX3 Single-Chains (M = Cr, V and X = Cl, Br, I)

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