Fig5a.dat - Contains the data shown for Figure 5 (a). The file consists of 2 columns titled: T (K) and Chi (m3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig5a_inset.dat - Contains the data shown for the inset of Figure 5 (a). The file consists of 2 columns titled: T (K) and 1/Chi (mol/m3). These represent the temperature (X) in kelvin and inverse magnetic susceptibility (Y) in moles per metres cubed.

Fig5b.dat - Contains the data shown for the inset of Figure 5 (b). The file consists of 5 double columns of the magnetic field (X) in tesla (T) versus magnetisation (Y) in Bohr magnetons per Nickel two plus ion (muB/ion) for temperatures 0.6, 1.5, 5, 10, and 30 Kelvin.

Fig5c.dat - Contains the data shown for Figure 5 (c). The file consists of 3 double columns of the magnetic field (X) in tesla (T) versus differential magnetisation (Y) in arbitrary units [dM/dH (a.u.)] for temperatures 0.6, 1.5 and 5 Kelvin.

Fig5c_inset.dat - Contains the data shown for the inset of Figure 5 (c). The file contains 2 columns of magnetic field (X) in tesla (T) versus the second differential of differential magnetisation (Y) in arbitrary units [d2M/dH2 (a.u.)] for a temperature of 0.6 Kelvin.

Fig6a_Data.txt - Contains the data shown in Figure 6a.

Fig6b_Data.txt - Contains the data shown in Figure 6b.

Fig8a.dat - Contains the data shown for Figure 8 (a). The file consists of 2 columns titled: T (K) and Chi (m3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig8a_inset.dat - Contains the data shown for the inset of Figure 8 (a). The file consists of 2 columns titled: T (K) and 1/Chi (mol/m3). These represent the temperature (X) in kelvin and inverse magnetic susceptibility (Y) in moles per metres cubed.

Fig8b.dat - Contains the data shown for the inset of Figure 8 (b). The file consists of 3 double columns of the magnetic field (X) in tesla (T) versus magnetisation (Y) in Bohr magnetons per Nickel two plus ion (muB/ion) for temperatures 0.58, 1.58 and 4.01 Kelvin.

Fig8c.dat - Contains the data shown for Figure 8 (c). The file consists of the magnetic field (X) in tesla (T) versus differential magnetisation (Y) in arbitrary units [dM/dH (a.u.)] for both the magnetic field upsweep (Y1) and downsweep (Y2) at a temperature of 0.58 Kelvin.

Fig8c_inset.dat - Contains the data shown for the inset of Figure 8 (c). The file consists of the magnetic field (X) in tesla (T) versus the second differential magnetisation (Y) in arbitrary units [d2M/dH2 (a.u.)] for both the magnetic field upsweep (Y1) and downsweep (Y2) at a temperature of 0.58 Kelvin.

Fig9_data.dat: Neutron powder diffraction data shown as red circles in the main pane of figure 9. Left column gives d spacing in units Angstrom, and right column gives intensity, in arbitrary units.

Fig9_fit.dat: Neutron powder diffraction fit shown as a black line in the main pane of figure 9. Left column gives d spacing in units Angstrom, and right column gives intensity, in arbitrary units.

Fig9_difference.dat: Neutron powder diffraction difference curve between data and fit shown as a blue line in the main pane of figure 9. Left column gives d spacing in units Angstrom, and right column gives intensity, in arbitrary units.

Fig9_inset_calculation.dat: Neutron powder diffraction calculation shown as a black line in the inset of figure 9. Left column gives d spacing in units Angstrom, and right column gives intensity, in arbitrary units.

Fig9_inset_difference.dat: Neutron powder diffraction difference curve between data and calculation shown as a blue line in the inset of figure 9. Left column gives d spacing in units Angstrom, and right column gives intensity, in arbitrary units.

Fig11a.dat - Contains the data shown for Figure 11 (a). The file consists of 2 columns titled: T (K) and Chi (m3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig11a_inset.dat - Contains the data shown for the inset of Figure 11 (a). The file consists of 2 columns titled: T (K) and 1/Chi (mol/m3). These represent the temperature (X) in kelvin and inverse magnetic susceptibility (Y) in moles per metres cubed.

Fig11b.dat -  Contains the data shown for Figure 11 (b). The file consists of 2 columns titled: T (K) and Chi (m3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig11b_inset.dat - Contains the data shown for the inset of Figure 11 (b). The file consists of 2 columns titled: T (K) and 1/Chi (mol/m3). These represent the temperature (X) in kelvin and inverse magnetic susceptibility (Y) in moles per metres cubed.

Fig11c.dat - Contains the data shown for the inset of Figure 11 (c). The file consists of 3 double columns of the magnetic field (X) in tesla (T) versus magnetisation (Y) in Bohr magnetons per Nickel two plus ion (muB/ion) for temperatures 1.5 (Y1) and 0.6 (Y2) Kelvin for the Zirconium compound and 0.6 Kelvin (Y3) for the Titanium compound.

Fig11c_inset.dat - Contains the data shown for the inset of Figure 11 (c). The file consists of two double columns of the magnetic field (X) in tesla (T) versus differential magnetisation (Y) in arbitrary units [dM/dH (a.u.)] for both the the Zirconium (Y1) compound and Titanium (Y2) compound at a temperature of 0.6 Kelvin.

Fig13a.dat - Contains the data shown for Figure 13 (a). The file consists of 2 columns titled: T (K) and Chi (m3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig13a_inset.dat - Contains the data shown for the inset of Figure 13 (a). The file consists of 2 columns titled: T (K) and 1/Chi (mol/m3). These represent the temperature (X) in kelvin and inverse magnetic susceptibility (Y) in moles per metres cubed.

Fig13b.dat - Contains the data shown for the inset of Figure 13 (b). The file consists of 4 double columns of the magnetic field (X) in tesla (T) versus magnetisation (Y) in Bohr magnetons per Nickel two plus ion (muB/ion) for temperatures 0.58, 1.5, 1.68 and 4.06 Kelvin.

Fig13b_inset.dat - Contains the data shown for the inset of Figure 13 (b). The file consists of two double columns of the magnetic field (X) in tesla (T) versus differential magnetisation (Y) in arbitrary units [dM/dH (a.u.)] for temperatures 0.58, 1.5, 1.68 and 4.06 Kelvin.

Fig17a.dat - Contains the data shown for Figure 17(a). The file consists of 2 columns titled: T (K) and Chi (m^3/mol). These represent the temperature (X) in kelvin and magnetic susceptibility (Y) in metres cubed per mole.

Fig17b.dat - Contains the data shown for Figure 17(b). The file consists of 4 double columns of the magnetic field (X) in tesla (T) versus magnetisation (Y) in Bohr magnetons per Nickel(II) ion (muB/ion) for temperatures 0.6, 1.6, 4.1 and 9.8 Kelvin.