14890-41-6Relevant articles and documents
Ciampolini, M.,Mani, F.
, p. 91 - 96 (1977)
Excitonic two-phonon progressions in transition metal compounds
Pollini
, p. 281 - 286 (2000)
Evidence of two-phonon structures is reported for some intra-configurational crystal field transitions in layered V- and Cr-halides. In particular, the crystal field spectrum of CrBr2 (3d4) has been shown for the first time, since the exciton-phonon interaction, despite its unfilled e(g) orbitals, vanishes to first order yielding a two-phonon sequence in the 3A1(G) + 3A2(F) band. It is suggested that the main mechanism for the occurrence of two-phonon progressions consists in the direct coupling of the incident photon to a two-phonon state via the second-order dipole moment operator. (C) 2000 Elsevier Science B.V.
Hauser, Andreas,Falk, Urs,Fischer, Peter,Guedel, Hans U.
, p. 343 - 354 (1985)
The vapor pressures of vanadium(II) chloride, vanadium(III) chloride, vanadium(II) bromide, and vanadium(III) bromide by Knudsen effusion
Mccarley, Robert E.,Roddy, James W.
, p. 60 - 63 (2008/10/08)
The vapor pressures of crystalline VCl2, VBr2, VCl3, and VBr3 have been measured by the Knudsen effusion method. Only the simple vaporization was observed for VCl2 and VBr2 over the interva
