Crystal-field levels of Nd3+ in a new langasite compound Nd3CrGe3Be2O14
来源期刊：Journal of Rare Earths2019年第11期
论文作者：Sergei A.Klimin Boris V.Mill Marina N.Popova
文章页码：1250 - 1254
摘 要：We report on the crystal-field（CF） levels of Nd3+in Nd3CrGe3Be2O14,a representative of recently synthesized Be-containing langasites.They are the first in the family to contain two magnetic subsystems,1 D chromium and Kagome-like rare-earth ones.High-resolution broad-band temperature-dependent spectra allow us to find all five CF Kramers doublets of the ground 4I9/2 CF multiplet and 38 levels of the excited 4I11/2,13/2,15/2,4F3/2,4F5/2+2H9/2,4F7/2+4S3/2 and 4F9/2 CF multiplets.These data form a basis for a future exploration of this interesting two-sublattice magnet with frustrated interactions.Optical transitions between Kramers doublets of Nd3+ indicate magnetic activity of 1D-chromium chains at T <20 K.
Sergei A.Klimin1，Boris V.Mill2，Marina N.Popova1
1. Institute of Spectroscopy,Russian Academy of Sciences2. Faculty of Physics,M.V.Lomonosov Moscow State University
摘 要：We report on the crystal-field（CF） levels of Nd3+in Nd3CrGe3Be2O14,a representative of recently synthesized Be-containing langasites.They are the first in the family to contain two magnetic subsystems,1 D chromium and Kagome-like rare-earth ones.High-resolution broad-band temperature-dependent spectra allow us to find all five CF Kramers doublets of the ground 4I9/2 CF multiplet and 38 levels of the excited 4I11/2,13/2,15/2,4F3/2,4F5/2+2H9/2,4F7/2+4S3/2 and 4F9/2 CF multiplets.These data form a basis for a future exploration of this interesting two-sublattice magnet with frustrated interactions.Optical transitions between Kramers doublets of Nd3+ indicate magnetic activity of 1D-chromium chains at T <20 K.
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