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Magnetism in antiperovskite (Li₂M)ChO (M = Fe, Mn, Co; Ch = S, Se) diluted magnets with fixed 1/3 filling: the key role of magnetic anisotropy · arXivDesk

2608.13111Aug 13, 2026

Magnetism in antiperovskite (Li $_2$ M)ChO (M = Fe, Mn, Co; Ch = S, Se) diluted magnets with fixed 1/3 filling: the key role of magnetic anisotropy

Jieyuan Zheng, Frederik L. Carstens, Lennart Singer, Mohammed A. A. Mohamed, Luca Bischof, Alexey Alfonsov, Jan Arneth, Silke Hampel +2

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Abstract

We report the magnetic properties of a series of lithium-rich antiperovskites (Li $_2M$ ) $Ch$ O ( $M$ = Fe, Co, Mn and $Ch$ = Se, S) where transition metal and lithium ions are randomly distributed on the X-sites of the X $_3$

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We report the magnetic properties of a series of lithium-rich antiperovskites (Li₂M)ChO (M = Fe, Co, Mn and Ch = Se, S) where transition metal and lithium ions are randomly distributed on the X-sites of the X₃BA structure, thereby forming a strongly diluted magnetic sublattice. Our study hence enables us to investigate the evolution of magnetic order at fixed 1/3-filling -- which is in the vicinity but slightly above the percolation threshold -- upon variation of the spin size, the magnetic anisotropy, and the orbital configuration.

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The paper addresses: Magnetism in antiperovskite (Li₂M)ChO (M = Fe, Mn, Co; Ch = S, Se) diluted magnets with fixed 1/3 filling: the key role of magnetic anisotropy.
We report the magnetic properties of a series of lithium-rich antiperovskites (Li₂M)ChO (M = Fe, Co, Mn and Ch = Se, S) where transition metal and lithium ions are randomly distributed on the X-sites of the X₃BA structure, thereby forming a strongly diluted magnetic sublattice.