A field induced ferromagnetic-like transition below 2.8 K in Li 2CuO2: An experimental and theoretical study

Abstract

The low temperature magnetic properties of the Li2CuO 2 compound have been investigated by means of superconducting quantum interference device magnetometry. We find in addition to an antiferromagnetic phase below 9.5 K a ferromagnetic-like steep rise of the magnetization around 2.8 K. The observed low temperature behavior is discussed by considering second and fourth order magnetocrystalline effective anisotropy coefficients, in addition to the exchange couplings reported in the literature. © 1998 American Institute of Physics.