On the anisotropy of the magnetic properties of CsYbZnSe3 |
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Authors: | Chan George H Lee Changhoon Dai Dadi Whangbo Myung-Hwan Ibers James A |
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Institution: | Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA. |
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Abstract: | DC magnetic susceptibility measurements on CsYbZnSe 3 show a broad magnetic transition at approximately 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 CsYbZnSe 3 prefer to orient along 010] rather than along either 100] or 001] of this orthorhombic material and that the spin exchange between adjacent Yb3+ ions along 100] is substantially antiferromagnetic. The magnetic properties of CsYbZnSe 3 are best described by an Ising uniform antiferromagnetic chain model. |
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