We report a comparative investigation of the magnetostrictive and magnetoconductivity effects in the low temperature ferrimagnetic phases of the spinel vanadate structure AV 2 O 4 where A = Fe, Mn, and Co. In temperature and magnetic field exhibit distinctive physical properties in each case. These include the magneto-caloric signatures of magnetization reversal (Fe and Co), separable isotropic and anisotropic magnetostrictive effects (Mn), glass-like dynamics (Co), and evidence in the fielddependent dielectric response for the alteration of the ferrimagnetic spin structure with increasing 2 magnetic field (Fe). These findings can guide future dielectric-and magnetoconductance-based spinel studies with a focus on the low temperature and high magnetic field properties of canted ferrimagnetic spin configurations and orbital-lattice ordering effects. 75.25.+z, 75.50.Gg, 75.80.+q, 71.70
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