High-pressure optical studies of Y₂O₃:Eu³⁺nanoparticles

Pressure Effects on the Optical Properties of LuVO₄:Eu³⁺ Nanoparticles

“…As it is mentioned above a similar decrease of the fluorescence lifetime under the pressure was observe in EuPO 4 small crystal particle [19]. Also, experimentally was observed the same type of change for the fluorescence lifetime for τ for 5 [25]. A decrease of τ with pressure was observed for the 4f-4f transition of Eu 3+ in lithium borate glass [46].…”

“…In consideration the variation on the refractive index np n for nanoparticle with pressure we have takes in account molecular volume and electronic polarizability for individual ions for nanoparticles as in literature data [6]. The refractive pressure dependence, in our case LuVO 4 :Eu 3+ nanoparticle, np n can be express with relation from our previous papers with successful ware applied on several nanomaterials exposed to the high pressure [6,13,14,25,35].In agreement mentioned above nanoparticles LuVO 4 :Eu , respectively. There is no single opinion on the affect of high pressure on refractive index.…”

“…Pressure dependence for a line position at bout 619 nm in LuVO 4 : Eu 3+ nanoparticles we have described using the Equation (22) from literature data [24] which obtained good agreement between experimental and theoretical predicted values for RE doped nanoparitcle [6,13,25]. The procedure was described in details in literature data [6,13].…”

High-pressure and optical properties of LaMgAl11O19:Sm3+laser material

“…According to the mentioned discussion, refractive index can be described with Lorentz-Lorenz equation. Also, in agreement with the literature (data obrisati ovu reč), the effective refractive index n eff (defined with n eff = n mater + n med ) has to be used (10). n mater is the material (in our case LMA:Sm 3+ ) refractive index and n med is the surroundings refractive index.…”

“…Second, in general cases, the fluorescence lifetime for the RE ions for crystals (9) as well as for nanoparticles (10,11) can be described as a function of the refractive wavelength of emitted light, oscillator strength, and refractive index.…”