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In this work the β phase of Vanadiumoxosulphate (VI) (β-VOSO4) crystal was used to study the physical properties of low dimensional magnetism in spin ½ chains.
Structural analysis from X-ray diffraction and neutron diffraction performed on the sample, confirm that it crystallizes in the Pnma (62) space group. β-VOSO4 has V4+ bounded to six oxygen that gives it an octahedral configuration with one unpaired electron, thus with a total spin 1/2. The V-O-V bound running parallel to the a-axis form a spin ½ chain.
The physical effect of this spin chain on the magnetic susceptibility and heat capacity was examined and it shows that the magnetic moment is isotropic and the intra-chain magnetic interaction is antiferromagnetic. This magnetic behavior has a significant effect on the susceptibility and heat capacity at temperatures below 60K. The magnitude of the magnetic exchange interaction between the spins was calculated to range from 45.4 K to 43.9K from fits to the magnetic susceptibility.
