The magnetic and structural properties of (Li x Zn 1- x )V 2 O 4 at low temperatures have been studied. The ground state of metallic LiV 2 O 4 is not any magnetically ordered one although the magnetic susceptibility shows the Curie-Weiss behavior above 100 K and a broad maximum around 20 K. With substituting Zn for Li the spin-glass state appears as the ground state in 0.1≤ x ≤0.9. On the other hand the insulating ZnV 2 O 4 exhibits the cubic to tetragonal transition at 50 K followed by the antiferromagnetic order below 40 K. ZnV 2 O 4 shows a difference of magnetic susceptibility between zero-field and field cooled process below 95 K, which suggests the development of strong short-range correlation among spins. These transitions are sharply suppressed by the substitution of Li. The obtained results indicate that (Li x Zn 1- x )V 2 O 4 with the cubic spinel structure is a geometrically frustrated magnetic system.
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Ueda et al. (1997) studied this question.
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