P. SaeaunY. ZhaoP. PiyawongwatthanaT. J. SatoF. C. ChouM. AvdeevG. GitgeatpongK. MatanRajabhat UniversityA. James Clark School of EngineeringAustralian Nuclear Science and Technology OrganisationNational Synchrotron Radiation Research Center TaiwanNIST Center for Neutron ResearchMahidol UniversityTohoku UniversityNational Taiwan UniversityScienceMinistry of Science and Technology2020-11-182020-11-182020-10-07Physical Review B. Vol.102, No.13 (2020)24699969246999502-s2.0-85093073679https://repository.li.mahidol.ac.th/handle/20.500.14594/60002© 2020 American Physical Society. Magnetization measurements on single-crystal cubic SrCuTe2O6 with an applied magnetic field along three inequivalent high symmetry directions [100], [110], and [111] reveal weak magnetic anisotropy. The fits of the magnetic susceptibility to the result from a quantum Monte Carlo simulation on the Heisenberg spin-chain model, where the chain is formed via the dominant third-nearest-neighbor exchange interaction J3, yield the intrachain interaction (J3/kB) between 50.12(7) K for the applied field along [110] and 52.5(2) K along [100] with about the same g factor of 2.2. Single-crystal neutron diffraction unveils the transition to the magnetic ordered state as evidenced by the onset of the magnetic Bragg intensity at TN1=5.25(9)K with no anomaly of the second transition at TN2 reported previously. Based on irreducible representation theory and magnetic space group analysis of powder and single-crystal neutron diffraction data, the magnetic structure in the Shubnikov space group P4132, where the Cu2+S=1/2 spins antiferromagnetically align in the direction perpendicular to the spin chain, is proposed. The measured ordered moment of 0.52(6)μB, which represents 48% reduction from the expected value of 1μB, suggests the remaining influence of frustration resulting from the J1 and J2 bonds.Mahidol UniversityMaterials ScienceArticleSCOPUS10.1103/PhysRevB.102.134407