Optical properties of Ce:Mn:LiNbO3 crystals with various [Li]/[Nb] ratios

Computer simulation of metal co-doping in lithium niobate

“…In tables 4-7, the lowest solution energies for each pair of dopants are italicized. Comparing these results with available experimental data, it is noted that, for Ce 4+ , Mn 2+ doping (table 6), the calculations suggest scheme (iii) with occupation of both Li and Nb sites, which agrees with [21], which finds that the Ce 4+ and Mn 2+ ions occupy two sites with different site symmetries. For Ru 4+ and Fe 3+ (table 7), the two lowest energy schemes are highlighted, including scheme (ii), with the two ions substituting at both Li and Nb sites; this observation is consistent with the results of Xi et al [22].…”

A study of sulfur/selenium substitution effects on physical and mechanical properties of vacuum-grown ZnS1−xSex compounds using Boubaker polynomials expansion scheme (BPES)

“…Nevertheless, ternary Sulfide-Seleneide grown crystals ZnS 1−x Se x , lie between among the rare II-VI-like Zn-doped semiconductors with can form a layered structure. Such compounds have several applications in different fields, such as thermoelectricity [6,7], charge storage [8], photoconduction [9][10][11] as well as hydrogen production under visible light irradiation.…”

Photorefractive property dependence on chemical composition of cerium-doped lithium niobate single crystal

“…For charge compensation, four Li þ vacancies are induced. The 3 for the crystal with the completely reduced ones, and Ce x Li y & 1-y-4x NbO 3 for the oxidized ones. According to the experimental data, it can be explained that the Ce-O bond strength is stronger than that of the Li-O bond and weaker than that of the Nb-O bond in the AO 6 (A: Li, Nb or Ce) octahedra.…”

“…Chemical doping and increasing the [Li]/ [Nb] in the crystal are the conventional ways to improve the properties of LN crystal, which has been investigated for many years. Among them, Ce-doped LN including co-doped ones and tri-doped ones, such as Ce:Fe:LN, [2] Ce:Mn:LN, [3] Ce:Hf:LN, [4] Mg:Ce:Fe:LN, [5] Sc:Ce:Cu:LN, [6,7] etc., exhibit intriguing physical properties. However, there is lack of system research for Ce:LN.…”

“…He-Ne laser (λ ¼ 632.8 nm) was used as the light source to record and erase holograms. [18] The saturation value of the refractive-index change (Dn sat ), [19] the dynamic range (M # ) [3] and photorefractive sensitivity (S) could be calculated by the following formulae:…”