Magnetic ground state of the one-dimensional ferromagnetic chain compoundsM(NCS)2(thiourea)2(M

Abstract

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Semiclassical approach to spin dynamics of a ferromagnetic S = 1 chain

“…Our model is pertinent to the S = 1 spin chain compound NiNb 2 O 6 and other q1D magnets with large spin size. [30] Our results also suggest that very different low-energy spin dynamics in NiNb 2 O 6 from its effective spin S = 1/2 counterpart CoNb 2 O 6 , though both compounds exhibit easy-axis anisotropy. The calculated spin dynamics, especially the continua in spin excitation spectra can be verified by various experiments including inelastic neutron scattering and Raman scattering.…”

Non-collinear magnetism in the post-perovskite thiocyanate frameworks CsM(NCS)3

“…The Curie–Weiss fit of the inverse susceptibility above 180 K gives a value for the Curie–Weiss temperature, θ CW , of −8.6(8) K. However, this value is particularly sensitive to the fitting temperature range: θ CW = +1.5(4) K when 100 < T < 300 K, whereas θ CW = −12.7(8) K for a fit 200 < T < 300 K. This variation is likely due to the presence of significant single-ion anisotropy, typical of Ni 2+ . 48,49 The Curie constant, C , is 0.85(2) emu K mol −1 , which is lower than the spin only value, C spin only = 1 emu K mol −1 . The lower than expected Curie constant (ESI Fig.…”

Magneto-structural Correlations in Ni2+–Halide···Halide–Ni2+ Chains

“…The magnetization data do not provide any additional information in this particular case as the crystal shatters upon application of a significant field parallel to the hard direction, an effect that has also been observed previously. 50 The d M /d H curves of NiBr 2 (3,5-lut) 4 are significantly different from that of NiCl 2 (3,5-lut) 4 . There is a peak indicating the presence of magnetic interactions, which is supported by fitting the susceptibility data to a a mean-field correction to account for the exchange term.…”