Pressure-induced changes in the energetic structure of the 3d3 ions in solid matrices

Origin of theE2↔T42Fano resonance in<

“…[42][43][44] This behavior is quite general on comparing the variation of ⌬ with the crystal volume V as indicated elsewhere. 45,46 The measured exponents, named nK in Refs. 45 and 46, are usually smaller than 5 ͑K Ͻ 1͒.…”

Calculations of physical properties of pure and doped crystals: Ab initio and semi-empirical methods in application to YAlO3:Ce3+ and TiO2

“…External hydrostatic pressure has been shown to be a powerful tool for modification of optical properties of solids [43]. From the microscopic point of view, an increased external pressure decreases interatomic distances, increases the strength of crystal field acting upon the impurity ions' electrons and eventually leads to significant changes of the optical spectra of doped crystals.…”

Effect of External Pressure on the Excitation Energy Transfer from [Cr(ox)3]3− to [Cr(bpy)3]3+ in [Rh1−xCrx(bpy)3][NaM1−yCry(ox)3]ClO4

“…External pressure is a versatile tool to tune the relative energies of the different excited states of coordination compounds of transition metal ion. [5][6][7] Thus Grinberg and Suchocki [8] have recently reviewed the effect of pressure on the electronic structure of 3d 3 transition metal ions, notably of Cr 3 + and Mn 4 + in oxide lattices, and Shen et al [9] studied the effect of external pressure on the excitation energy transfer from Cr 3 + to Tm 3 + co-doped into Y 3 Al 5 O 12 . Three principal contributions to the overall energy transfer from different electronic states of Cr 3 + were thus identified, namely from the electronic origins of the 2 E state at low temperature, from thermally activated transfer from the anti-Stokes sidebands of the 2 E state, and from the thermally activated 4 3 ] 3 + at longer distances for those donors which have no acceptors in the nearest neighbour shell contributing the remaining 30 % to the total energy transfer.…”