On the Anisotropy of the Magnetic Properties of CsYbZnSe3
journal contributionposted on 03.03.2008, 00:00 by George H. Chan, Changhoon Lee, Dadi Dai, Myung-Hwan Whangbo, James A. Ibers
DC magnetic susceptibility measurements on CsYbZnSe3 show a broad magnetic transition at ≈10 K and pronounced differences between zero-field-cooled and field-cooled data that lead to experimental effective magnetic moments of 4.26(5) BM and 4.39(4) BM, respectively. Specific heat measurements confirm that there is neither long-range ordering nor a phase transition between 1.8 and 380 K. First-principles electronic structure calculations with and without inclusion of spin–orbit coupling effects show that the spins of CsYbZnSe3 prefer to orient along  rather than along either  or  of this orthorhombic material and that the spin exchange between adjacent Yb3+ ions along  is substantially antiferromagnetic. The magnetic properties of CsYbZnSe3 are best described by an Ising uniform antiferromagnetic chain model.