Abstract
Diffuse transmittance spectra of polycrystalline samples of chain nickelate Nd2BaNiO5 were measured with high resolution (0.1 cm-1) over wide ranges of wavenumbers (1500–20000 cm-1) and temperatures (4.2–300 K). The energies of 54 Stark sublevels of the Nd3+ ion and exchange splittings of some of them were determined in the magnetically ordered state of Nd2BaNiO5 (T N = 47.5 ± 1 K). It was shown that the low-temperature magnetic properties of Nd2BaNiO5 are determined by exchange splitting (32 cm-1) of the ground state.
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Translated from Fizika Tverdogo Tela, Vol. 47, No. 8, 2005, pp. 1440–1446.
Original Russian Text Copyright © 2005 by Popova, Romanov, Klimin, Chukalina, Mill, Dhalenne.
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Popova, M.N., Romanov, E.A., Klimin, S.A. et al. Stark structure and exchange splittings of Nd3+ ion levels in chain nickelate Nd2BaNiO5 . Phys. Solid State 47, 1497–1503 (2005). https://doi.org/10.1134/1.2014500
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DOI: https://doi.org/10.1134/1.2014500