Effect of magnetic ordering of Dy2BaNiO5 on the crystal-field levels of dysprosium: optical spectroscopy of f-f transitions
1 Institute for Spectroscopy RAS, 108840 Troitsk, Moscow, Russia
2 Technological Institute for Superhard and Novel Carbon Materials, 108840, Troitsk, Moscow, Russia
* Corresponding author: email@example.com
Published online: 13 December 2016
Optical transmission spectroscopy study of the Haldane magnet Dy2BaNiO5 was performed in the region of f-f transitions of the Dy3+ ion in a wide range of temperatures (5-300 К). At temperatures lower than TN (59 K), Kramers doublets of the rare-earth ion split. Spectroscopic data obtained were used to calculate the Schottky-type anomaly in the temperature dependence of the magnetic susceptibility of Dy2BaNiO5 and to model the experimental data available in literature. Anomalous behavior of crystal-field energies of the Dy3+ ion was attributed to the magnetoelectric interactions.
© The Authors, published by EDP Sciences, 2017
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