32 citations · 117 across the 6 of their papers we have counts for
6 papers
Spectroscopy of f-f transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe(BO)
M. N. Popova, E. P. Chukalina, K. N. Boldyrev +3
Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe(BO) using circularly polarized x rays [T. U…
Probing Dy3+ magnetic moments in multiferroic perovskite DyMnO3 by optical spectroscopy
M. A. Kashchenko, S. A. Klimin, A. M. Balbashov +1
We present a detailed temperature-dependent spectroscopic study of DyMnO3 single crystals with distorted perovskite structure. Energies of 36 crystal-field levels of Dy3+ in parama…
High resolution infrared absorption spectra, crystal field, and relaxation processes in CsCdBr_3:Pr^3+
M. N. Popova, E. P. Chukalina, B. Z. Malkin +4
High resolution low-temperature absorption spectra of 0.2% Pr^3+ doped CsCdBr_3 were measured in the spectral region 2000--7000 cm-1. Positions and widths of the crystal field leve…
Lattice vibrations of alpha'-NaV2O5
M. N. Popova, A. B. Sushkov, S. A. Golubchik +6
We have measured far infrared reflectance and transmittance spectra as well as Raman scattering spectra of α'-NaV2O5 single crystals for all the principal polarizations. The temper…
Appearance of new lines and change in line shape in the IR spectrum of a NaV_2O_5 single crystal at the spin-Peierls transition
M. N. Popova, A. B. Sushkov, A. N. Vasil'ev +2
We report the first observation of new lines in the infrared spectrum of a crystal due to unit-cell doubling at the spin-Peierls transition (in NaV_2O_5). The change in the shape o…
Folded modes in the infrared spectra of the spin-Peierls phase of CuGeO_3
M. N. Popova, A. B. Sushkov, S. A. Golubchik +2
Polarized far-infrared transmittance spectra of CuGeO_3 single crystals were measured at different temperatures (6K < T < 300K). Two spectral lines, at 284.2 cm-1 in E||c polarizat…