Radio of the nuclear electric quadrupole moments of 50V (I = 6) and 51V (I = 72)

In SmVO₄ the weak paramagnetism of the Sm³⁺ ions results in a very small paramagnetic shift of the vanadium nuclear resonance; the lines are narrow (?4 kHz) and there is no sign of saturation down to 1.7 K. The quadrupole splittings of the two nuclei have been measured at natural abundance in the same single crystal, giving the following value for the ratio of the nuclear electric quadrupole moments: ∥⁵⁰Q/⁵¹Q∥ = 4.07 (3). Values of ⁵¹Q = ?0.0515 (10) b and ⁵⁰Q = +0.209(6) b are suggested.