High-field magnetization of the 3d heavy-fermion system LiV$_2$O$_{4-d}$ (d = 0, 0.08)

TL;DR

This study investigates the high-field magnetization properties of LiV2O4 and its oxygen-deficient variant, revealing metamagnetic behavior in the former and suppressed magnetism in the latter, highlighting the role of magnetic interactions.

Contribution

It provides the first high-field magnetization data for LiV2O4 and its oxygen-deficient form, elucidating the effects of oxygen deficiency on magnetic interactions.

Findings

LiV2O4 exhibits metamagnetism around 38 T at 4.2 K.

Oxygen deficiency suppresses metamagnetism and reduces magnetic moments.

Ferromagnetic interactions are enhanced by magnetic fields in LiV2O4.

Abstract

Metamagnetic behavior has been observed in LiV2O4 powder sample around 38 T at 4.2 K. On the other hand, magnetization for oxygen deficient LiV2O3.92 shows no indication of metamagnetism up to 40 T, and shows substantially reduced magnetic moment compared to that of LiV2O4. These results suggest that ferromagnetic interaction is strongly enhanced by magnetic fields in LiV2O4, whereas antiferromagnetic interaction is dominant in LiV2O3.92.