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Behavior of the magnetic subsystems in Nd2BaNiO5 |
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| Authors: | E. A. Popova S. A. Klimin M. N. Popova R. Klingeler N. Tristan B. Büchner A. N. Vasil’ev |
| Affiliation: | 1. National Research University Higher School of Economics, Moscow, 109028, Russia 2. Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia 3. Kirchhoff Institute for Physics, University of Heidelberg, Heidelberg, INF 227 69120, Germany 4. Leibniz-Institute for Solid State and Materials Research, IFW Dresden, 01171, Germany 5. Moscow State University, Moscow, 119992, Russia 6. Theoretical Physics and Applied Mathematics Department, Ural Federal University, Yekaterinburg, 620002, Russia |
| Abstract: | The temperature dependences of the heat capacity, the magnetic susceptibility, and the splitting of the ground Kramers doublet of the Nd3+ ion in the chain magnet Nd2BaNiO5 are studied. An antiferromagnetic phase transition manifests itself as anomalies in all these dependences. The parameters of the Nd-Ni and Nd-Nd interactions are estimated. The field dependence of the magnetization has two anomalies. A strong magnetic anisotropy prevents the magnetic moments of the Nd3+ ion from deviating from axis c in the crystal even in an external magnetic field. The processes of magnetization and the internal specific features of a chain of spins S = 1 are discussed. |
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