Probability ofYb3+4f−4ftransitions in gadolinium gallium garnet crystals at high hydrostatic pressures

Luminescent properties of ytterbium-doped ternary lanthanum chloride

“…In case of non-exponential kinetics the decay times were determined from the end part of the kinetics. The measured values of the decay times are consistent with typically observed decay times of 2 F 5/2 → 2 F 7/2 intra-4f-shell emission of Yb 3+ in ionic materials, which are in the 500-2500 s range [17][18][19][20][21][22]. The luminescence lifetimes decrease almost two times between 25 K and 300 K, i.e.…”

Why so deep research on Yb3+-doped optical inorganic materials?

“…3, while the large spin-orbit coupling at the end of series determines a quite large energy difference, of the order of 10,000 cm −1 , between the two energy manifolds of the ground configuration. Such 4f 12 -5d configuration is under analysis by pressure dependence [1,2] has also been studied with other ions as Nd 3+ , Sm 2+ , Eu 3+ , Tb 3+ [3][4][5][6]. We show in Fig.…”

Pressure-induced structural evolution and amorphization in Eu3Ga5O12

“…The PIA transition in the REE garnets is shown to be irreversible. Because REE garnets doped with different REE elements have fascinating optical luminescent properties, which could serve as laser materials and new optical pressure sensors, [9][10][11][12][13][14][15][16] understanding the structural evolution, thermodynamics, and driving mechanism of the crystalline-amorphous transformation is of great interest both from the fundamental and application points of view. However, few studies are focused on the structural change of the REE garnets to demonstrate the amorphization process in these systems.…”