Magnetic relaxation in large spin molecular paramagnets is often found to behave as <InlineEquation ID="Equ1"> <EquationSource Format="TEX">$\delta M(t) \sim \sqrt{t}$</EquationSource> </InlineEquation> at short times t. This behaviour was explained by Prokofiev & Stamp as arising from dipole interactions between molecular spins. However, as observed by Miyashita & Saito, the same...</equationsource></inlineequation>