Raman scattering in rare earths tetraborides

Effect of concentrated light on morphology and vibrational properties of boron and tantalum mixtures

“…on the β-B electronic properties and structure. There are available Raman spectra of different metal-borides: measured for LuB 12 and ZrB 12 [33] , and numerous other dodecaborides [34] (which are excellently agreed with ab initio calculations of the phonon spectra); single-crystalline lanthanum hexaboride LaB 6 [35] ; rare earth tetraborides RE B 4 ( RE = Dy, Er, Gd, Ho, La, Lu, Nd, Pr, Sm, Tb, Tm, and Y) [36] , etc. However, all these literature data on delocalized vibrations of metal atoms in regular lattices of metal borides are useless in case of localized vibrations of in metal-doped boron lattice.…”

Single-Crystal Growth of Metallic Rare-Earth Tetraborides by the Floating-Zone Technique

“…It has been suggested the rare earths in the tetraborides-class of materials can also be described by the SSL [9]. The rare-earth tetraboride-class of materials [10] has attracted a great deal of theoretical and experimental attention, due to the fact that the relatively large magnetic moment of rare-earth ions provides the possibility to investigate the SSL in the classical limit [5].…”

Peculiarities of electronic, phonon and magnon subsystems of lanthanum and samarium tetraborides

“…Joint calorimetric and X-ray studies of the thermal properties of lanthanum and samarium tetraborides, within a wide range of low temperatures, have made it possible to define an approach for the description of the temperature dependence of their heat capacity and thermal expansion by temperatures conform to the data previously obtained by Raman spectroscopy [34]. It is clear that the proposed approach can be extended to obtain crystalline lattice dynamics parameters for substances belonging to other classes as well.…”