1. |
A. L. Sukhachev, A. V. Malakhovskii, C. S. Nelson, I. A. Gudim, V. L. Temerov, “Comparison of the absorption spectra of Nd$^{3+}$ ions in the NdFe$_{3}$(BO$_{3}$)$_{4}$, Nd$_{0.5}$Gd$_{0.5}$Fe$_{3}$(BO$_{3}$)$_{4}$, and Ho$_{0.75}$Nd$_{0.25}$Fe$_{3}$(BO$_{3}$)$_{4}$ crystals”, Fizika Tverdogo Tela, 63:1 (2021), 111–119 ; Phys. Solid State, 63:1 (2021), 113–121 |