Optical Spectroscopy of Multiferroic Rare-Earth Manganites

Hexagonal rare-earth manganites (RMnO 3 with R = Er, Tm, Yb) have been studied by high resolution absorption spectroscopy in the infrared spectral range around the Néel-temperature (T N ≈ 80 K). Series of transitions have been assigned for the R 3+ rare-earth ions in trigonal crystal field. Some of...

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Bibliographic Details
Published in:Ferroelectrics 2012-01, Vol.428 (1), p.82-86
Main Authors: Kovács, L., Lengyel, K., Gospodinov, M.
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Crystals
Electric fields
Ferroelectric materials
Ferroelectrics
Infrared
Lattice parameters
Magnetic fields
Manganites
Phase transitions
Rare earth metals
Spectra
Spectrum analysis
Temperature effects
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Summary:Hexagonal rare-earth manganites (RMnO 3 with R = Er, Tm, Yb) have been studied by high resolution absorption spectroscopy in the infrared spectral range around the Néel-temperature (T N ≈ 80 K). Series of transitions have been assigned for the R 3+ rare-earth ions in trigonal crystal field. Some of the Stark components of the rare-earth multiplets split below the Néel-temperature due to magnetic ordering. The Néel-temperature for the three compounds investigated decreases with increasing lattice constant (a).
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2012.675292