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Interaction of optical phonons with 4 f electrons in Ce c Nd 1– c F 3
Author(s) -
Leiteritz K.,
Schaack G.
Publication year - 1981
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250100108
Subject(s) - phonon , raman spectroscopy , condensed matter physics , laser linewidth , coupling (piping) , field (mathematics) , degenerate energy levels , electron , crystal (programming language) , physics , atomic physics , materials science , optics , quantum mechanics , laser , mathematics , computer science , pure mathematics , metallurgy , programming language
Using Raman spectroscopy we have studied some effects of the 4 f electron–phonon (magnetoelastic) coupling in Ce c Nd 1– c F 3 (0 ≤ c ≤1). This coupling manifests itself in the splitting of some twofold degenerate phonons in a magnetic field, accompanied by a reduction in linewidth, and in a zero‐field shift of phonon frequencies all depending on c . We have also studied the low lying (electronic) crystal field states of Nd 3+ ( 4 I 9/2 ) in NdF 3 and determined the eigenfunctions which have been used for a theoretical interpretation of the magnetoelastic effects in NdF 3 .