Magnetism in High-Entropy Wolframite Oxides A⁶WO₄ (A = Mn, Fe, Co, Ni, Cu, Zn) 

High-entropy oxides incorporate five or more cations in near-equimolar ratios on a single lattice site, producing emergent properties absent in their parent phases due to synergistic cation interactions. In high-entropy magnetic systems, mixed magnetic cations can generate new magnetic ground states through competing exchange interactions [1]. Here, we investigate magnetism in the high-entropy wolframite oxide A⁶WO₄ (A = Mn, Fe, Co, Ni, Cu, Zn)[2]. The parent compounds MnWO₄, FeWO₄, CoWO₄, and NiWO₄ each exhibit distinct antiferromagnetic structures: MnWO₄ shows a sequence of incommensurate and commensurate phases with (k = ±½, ¼, ¼) below TN = 13.5 K, whereas Fe, Co, and Ni analogs display collinear AFM order with k = (½, 0, 0) but different spin easy axes. Magnetization, heat-capacity, and neutron-scattering measurements reveal that A⁶WO₄ develops long-range AFM order with TN close to the average of its parent compounds. Ongoing refinement of the magnetic structure aims to clarify how the spin orientation in A⁶WO₄ relates to that of its parent phases.