Nuclear magnetism and the trivalent europium ion

Enhanced nuclear moments occur in atoms, molecules and all the transition g roups of the periodic table. They are unusually large for lanthanide ions, with electrons of the 4f group, but the mechanism responsible for enhanceme nt for other ions produces "anti-shielding" effects for the trivalent europ ium ion. These greatly reduce the effective nuclear magnetic moments in the ground state J= 0. Here it is suggested that dynamic nuclear polarization can be used to increase the effective nuclear moments, and off-set the anti -shielding. The substance is europium vanadate, "doped" with a small percen tage of samarium ions.