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The 4f^6 systems were hypothesized to possess non-magnetic (J = 0) groundstate. However, all such systems have distinctly shown the presence of non-zeroeffective moment. In this context, a rare earth orthovanadate EuVO4, which inspite of having J = 0 ground state, possess non-zero magnetic moment. Ourstudies reveal three different regions in this compound, boundaries of whichare demarcated from susceptibility data. The high temperature susceptibilityexhibits linear dependence on temperature which arises due to tetragonalcrystal field, followed by a temperature independent plateau like region,ascribed to Van Vleck paramagnetism. At low temperatures, Curie-Weiss likebehaviour is observed, which arise due to magnetic Eu2+ moments and results innon-zero effective moment. Our analysis reveals that the separation ({\lambda})between the J = 0 and J = 1 states decreases on increasing the externalmagnetic field which leads to an enhanced effective moment at higher fields.

Van Vleck paramagnetism and enhancement of effective moment with magnetic field in rare earth orthovanadate EuVO4