Magnetic behaviour of β-Li3CrO4

Abstract

Magnetic susceptibility and magnetization as a function of temperature and applied field of β-Li₃CrO₄ have been measured. The material is paramagnetic in the temperature range 100–15 K with an effective moment of 1.70 mu;_B and θ=2.6 K. Below 15 K, ferromagnetic interactions in the chromium sublattice are observed with a saturation magnetic moment of 0.8 mu;_B and T_cca. 10 K. The results are explained taking into account the crystal structure of the oxide and the oxidation state of the chromium.