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The Raman scattering investigation of the features of low-energy electronic excitations of the terbium ion in the KTb(WO4)2 crystal
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10.1063/1.4723666
/content/aip/journal/ltp/38/6/10.1063/1.4723666
http://aip.metastore.ingenta.com/content/aip/journal/ltp/38/6/10.1063/1.4723666

Figures

Image of FIG. 1.
FIG. 1.

Behavior of the Raman spectrum in an external magnetic field H||C 2 at 5 K. Experimental geometry is Z(YZ)X; symmetry of transitions is Bg . Spectral resolution is 1.8 cm−1.

Image of FIG. 2.
FIG. 2.

Behavior of the frequency (a), the integral intensity (b) for the Raman lines in an external magnetic field H || C 2 at 5 K (▪–electronic transition 1, •–electronic transition 2, ○–phonon line with energy of 76.6 cm−1, □–total intensity of the specified lines). Experimental geometry is Z(YZ)X; symmetry of transitions is Bg . Spectral resolution is 1.8 cm−1. Diagram of the observed transitions (c).

Image of FIG. 3.
FIG. 3.

Behavior of the Raman spectrum in an external magnetic field H||C 2 at 5 K. Experimental geometry is Z(YY)X; symmetry of transitions is Ag. Spectral resolution is 1.8 cm−1. The calculated values of the energies of electronic transitions were obtained from the Lorentzian approximation of spectra and are shown by arrows in this and the subsequent figures.

Image of FIG. 4.
FIG. 4.

Behavior of the Raman spectrum in an external magnetic field H||C 2 at 5 K: 0 (1), 5 (2), 10 (3), 15 (4), 20 (5), 25 (6), 30 (7) kOe. Experimental geometries Z(YY)X (a) and Z(YZ)X (b) correspond to the symmetries of transitions, Ag and Bg , respectively. Spectral resolution is 1.8 cm−1. In this and the subsequent figures asterisks denote lines that are “leaking” through due to depolarization of the apparatus and do not belong to the vibrations corresponding to this symmetry.

Image of FIG. 5.
FIG. 5.

Behavior of the frequency (a), the integral intensity (b), and the half-width (c) of the Raman lines in an external magnetic field H || C 2 at 5K (•–electronic transition with energy of 294 cm−1, ○–phonon line with energy of 298.2 cm−1). Experimental geometry is Z(YZ)X; symmetry of transitions is Bg .

Image of FIG. 6.
FIG. 6.

Behavior of the Raman spectrum in an external magnetic field H||C 2 at 5 K: 0 (1), 5 (2), 10 (3), 15 (4), 20 (5), 25 (6), 30 (7) kOe. Experimental geometry is Z(XZ)X (a) and Z(YZ)X (b), the symmetry of transitions is Bg . Spectral resolution is 1.8 cm−1.

Image of FIG. 7.
FIG. 7.

Behavior of the Raman spectrum (a) and the frequency of observed electronic transitions (b) in an external magnetic field HC 2 at 5 K: 0 kOe for KDy(WO4)2 (1); 0 (2), 10 (3), 20 (4), 30 (5) kOe for KTb(WO4)2. Experimental geometry is X(ZZ)Y, the symmetry of transitions is Ag . Spectral resolution is 1.8 cm−1.

Image of FIG. 8.
FIG. 8.

The behavior of the Raman spectrum (a) and the frequency of observed electronic transitions (b) in an external magnetic field HC 2 at 5K: 0 (1), 5 (2), 10 (3), 15 (4), 20 (5), 25 (6), 30 (7) kOe. Experimental geometries X(ZZ)Y and X(YZ)Y correspond to the Ag and Bg symmetries of transitions, respectively. Spectral resolution is 1.8 cm−1.

Image of FIG. 9.
FIG. 9.

The behavior of electronic levels in an external magnetic field H||C 2 at 5 K: •–Ag symmetry of transitions, ○–Bg symmetry of transitions.

Tables

Generic image for table
Table I.

The energy of electronic transitions in zero fields, their symmetry, and the spectroscopic splitting factor in a field H || C 2. The alleged separation into quasidoublets is displayed.

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/content/aip/journal/ltp/38/6/10.1063/1.4723666
2012-06-22
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The Raman scattering investigation of the features of low-energy electronic excitations of the terbium ion in the KTb(WO4)2 crystal
http://aip.metastore.ingenta.com/content/aip/journal/ltp/38/6/10.1063/1.4723666
10.1063/1.4723666
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