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oai:figshare.com:article/33819532 2026-09-15T19:23:55Z portal_1197 item_type_3 month_year_09_2026

Data for Magnetic ground state of the one-dimensional ferromagnetic chain compounds M(NCS)2(thiourea)2 (M=Ni,Co) Samuel P. M. Curley (10313079) R. Scatena (24953074) Robert C. Williams (1422460) Paul Goddard (564595) P. Macchi (1638670) T. J. Hicken (24909523) T. Lancaster (2511082) F. Xiao (14026886) S. J. Blundell (2511079) V. Zapf (24953077) J. C. Eckert (24953080) E. H. Krenkel (24953083) J. A. Villa (24953086) M. L. Rhodehouse (24953089) J. L. Manson (2472649) Thiourea -- Magnetic properties Organic compounds -- Magnetic properties Organic compounds -- Properties -- Testing Muon spin rotation Crystallization Migrated from ePrints The magnetic properties of the two isostructural molecule-based magnets, Ni(NCS)2(thiourea)2,S = 1, [thiourea = SC(NH2)2] and Co(NCS)2(thiourea)2, S = 3/2, are characterised using several techniques in order to rationalise their relationship with structural parameters and ascertain magnetic changes caused by substitution of the spin. Zero-field heat capacity and muon-spin relaxation measurements reveal low-temperature long-range ordering in both compounds, in addition to Ising-like (D < 0) single-ion anisotropy (DCo ∼ -100 K, DNi ∼ -10 K). Crystal and electronic structure, combined with DC-field magnetometry, affirm highly quasi-one-dimensional behaviour, with ferromagnetic intrachain exchange interactions J Co ≈ + 4 K and J Ni ∼ + 100 K and weak antiferromagnetic interchain exchange, on the order of J 0 ∼ − 0.1 K. Electron charge and spindensity mapping reveals through-space exchange as a mechanism to explain the large discrepancy in J-values despite, from a structural perspective, the highly similar exchange pathways in both materials. Both species can be compared to the similar compounds MCl2(thiourea)4, M = Ni(II) (DTN) and Co(II) (DTC), where DTN is known to harbour two magnetic field-induced quantum critical points. Direct comparison of DTN and DTC with the compounds studied here shows that substituting the halide Cl− ion, for the NCS− ion, results in a dramatic change in both the structural and magnetic properties.<br><br>Data record consists of ZIP Archive. Raw data in .dat format of Figures 2 to 9 in the corresponding publication. Further information can be found in the Readme file in the Archive. 2026-09-15T19:23:55Z Dataset Dataset 10.82444/warw.33819532.v1 https://figshare.com/articles/dataset/Data_for_Magnetic_ground_state_of_the_one-dimensional_ferromagnetic_chain_compounds_M_NCS_2_thiourea_2_M_Ni_Co_/33819532 CC BY 4.0