2025/06/24 by Ali, Anzar, Kaur, Guratinder, Maurya, Arvind +6
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)
paper · doi:10.48550/arxiv.2506.19725
We report the successful growth of high-quality single crystals of \ACVO, a quasi-one-dimensional zigzag chain compound containing Co2+ ions, using the optical floating zone method. The crystal growth was stabilized under high-pressure argon-oxygen gas with slow growth rates, overcoming challenges associated with the incongruent melting behavior of this material. X-ray diffraction confirms the zigzag arrangement of Co2+ ions, forming a quasi-one-dimensional chain structure. Magnetic susceptibility and heat capacity measurements reveal an antiferromagnetic phase transition at the Néel temperature (TN ∼ 3.5 K) and negative Curie-Weiss temperatures, indicative of dominant antiferromagnetic interactions. The distorted CoO6 octahedral geometry and strong spin-orbit coupling suggest that Co2+ ions likely exhibit an effective J = 1/2 Kramers doublet state. The results presented here demonstrate the potential of \ACVO as a platform for investigating low-dimensional magnetism and quantum magnetic phenomena. These insights shed light on the role of the A-site ion in tuning the magnetic interactions, which will foster future research into the field-induced behavior in these cobalt vanadates.