Synthesis and Anisotropic Magnetic Properties of LiCrTe${}_2$ Single Crystals with a Triangular-Lattice Antiferromagnetic Structure

Abstract

We report on the synthesis of LiCrTe${}_2$ single crystals and on their anisotropic magnetic properties. We have obtained these single crystals by employing a Te/Li-flux synthesis method. We find LiCrTe${}_2$ to crystallize in a TlCdS${}_2$ -type structure with cell parameters of $a$ = 3.9512(5) Å and $c$ = 6.6196(7) Å at $T$ = 175 K. The content of lithium in these crystals was determined to be near stoichiometric by means of neutron diffraction. We find a pronounced magnetic transition at $T_{\mathrm{N}}^{\mathrm{ab}}$ = 144 K and $T_{\mathrm{N}}^{\mathrm{c}}$ = 148 K, respectively. These transition temperatures are substantially higher than earlier reports on polycrystalline samples. We have performed neutron powder diffraction measurements that reveal that the long-range low-temperature magnetic structure of single crystalline LiCrTe${}_2$ is an A-type antiferromagnetic (AFM) structure. Our DFT calculations are in good agreement with these experimental observations. We find the system to be easy axis with moments oriented along the $c$-direction experimentally as well as in our calculations. Thereby, the magnetic Hamiltonian can be written as $H=H_{\mathrm{Heisenberg}}+{\sum }_i{K}_c(S_i^z{)}^2$ with $K_c=-0.34K$ (where $|S^z|=\frac{3}{2}$). We find LiCrTe${}_2$ to be highly anisotropic, with a pronounced metamagnetic transition for $H\perp ab$ with a critical field of $\mu H_{MM}$(5 K) $\approx$ 2.5 T. Using detailed orientation-dependent magnetization measurements, we have determined the magnetic phase diagram of this material. Our findings suggest that LiCrTe${}_2$ is a promising material for exploring the interplay between crystal structure and magnetism, and could have potential applications in spin-based 2D devices.

References in corpus (11)

• Magnetic 2D materials and heterostructures
• Intrinsic 2D-XY ferromagnetism in a van der Waals monolayer
• Quasi 1D electronic transport in a 2D magnetic semiconductor
• Dynamic Magnetic Crossover at the Origin of the Hidden-Order in van der Waals Antiferromagnet CrSBr
• Unconventional Anomalous Hall Effect in the Metallic Triangular-Lattice Magnet PdCrO2
• Frustrated two dimensional quantum magnets
• Electromagnon dispersion probed by inelastic x-ray scattering
• Long-range magnetic order in the $\tilde{S}=1/2$ triangular lattice antiferromagnet KCeS${}_2$
• The planar triangular $S=3/2$ magnet AgCrSe${}_2$: magnetic frustration, short range correlations, and field tuned anisotropic cycloidal magnetic order
• From kagome strip to kagome lattice: Realizations of frustrated S=1/2 antiferromagnets in Ti(III) fluorides
• Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe${}_2$ investigated by ${\mu }^{+}$SR as well as neutron and X-ray diffraction

Cited by in corpus (2)

• Structural Modulation and Enhanced Magnetic Ordering in Incommensurate K${}_{1-x}$CrSe${}_2$ Crystals
• Stoichiometry and Phase Control in K${}_{1-x}$CrSe${}_2$ via Self-Flux Synthesis