Magnetic specific heat and susceptibility of cupric oxide (CuO) single crystals

Abstract

We investigated the magnetic specific heat and entropy of a CuO single crystal in the wide temperature range from 1·5 K to 1000 K and determined the anisotropy of its magnetic susceptibility below 300 K. CuO behaves like an anisotropic low-dimensional antiferromagnet. The magnetization discontinuity is most clearly visible at TN2=214 K for fields in the b-c plane. The measured magnetic entropy at 1000 K, Sm(1000)=5·67 J/mol K, approaches the expected value of Sm=Rln2=5·76 J/mol K. © 1991 Indian Academy of Sciences.