Study of crystal-field excitations and infrared active phonons in TbMnO3

Study of crystal-field excitations and infrared active phonons in TbMnO3

The Tb3+ (4f8) crystal-field (CF) excitations and the infrared phonons in TbMnO3 are studied as a function of temperature and under an applied magnetic field. The phonon energy shifts reflect local displacement of the oxygen ions that contribute to the CF energy level shifts below 120 K and under ma...

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Veröffentlicht in:Journal of physics. Condensed matter 2018-05, Vol.30 (17), p.175602-175602
Hauptverfasser: Mansouri, S, Jandl, S, Balli, M, Fournier, P, Mukhin, A A, Ivanov, V Yu, Balbashov, A, Orlita, M
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crystal-field excitations
infrared spectroscopy
magnetization curve
multiferroics
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container_end_page 175602
container_issue 17
container_start_page 175602
container_title Journal of physics. Condensed matter
container_volume 30
creator Mansouri, S
Jandl, S
Balli, M
Fournier, P
Mukhin, A A
Ivanov, V Yu
Balbashov, A
Orlita, M
description The Tb3+ (4f8) crystal-field (CF) excitations and the infrared phonons in TbMnO3 are studied as a function of temperature and under an applied magnetic field. The phonon energy shifts reflect local displacement of the oxygen ions that contribute to the CF energy level shifts below 120 K and under magnetic field. The CF polarized transmission spectra provide interesting information about the debated nature of the excitations at 41, 65, 130 cm−1. We also evaluate the contribution of the charge transfer mechanism to the magnetoelectric process in TbMnO3 under magnetic field.
doi_str_mv 10.1088/1361-648X/aaaf06
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subjects crystal-field excitations
infrared spectroscopy
magnetization curve
multiferroics
title Study of crystal-field excitations and infrared active phonons in TbMnO3
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