High-pressure (HP) studies have been an active research area in fundamental physics and to meet demand of several technological applications. In this paper, we explored the HP effect on optical properties pyrochlore Gd2Hf2O7:5%Eu3+ (GHOE) nanoparticles (NPs). We investigated aspects their under such as charge transfer transitions, emission dynamics, asymmetry ratio, excited state lifetime, colo...

The advantages of the complex recombinant human lactoferrin (rhLF) with europium ions have been used to establish quantitative parameters specific interaction rhLF immobilized heparin-protein conjugate as a model cell-surface heparan sulfate proteoglycans. Heparin coupled through terminal formyl by reductive amination an inert protein was adsorbed part in wells polystyrene microplate. rhLF–Eu3+...

Hole burning, which is attributed to optical pumping of nuclear-quadrupole levels, has been observed in the stoichiometric rare-earth compound, EuP5O14 . The long lifetime of these holes (-60 min) implies slow nuclear-spin flip-flop rates. The small magnetic moment of Eu3+ has prevented conventional magnetic-resonance measurements on Eu3+ compounds, but hole burning provides a sensitive method ...

Monodisperse and spherical Eu-doped TiO2nanodots were prepared on substrate by phase-separation-induced self-assembly. The average diameters of the nanodots can be 50 and 70 nm by changing the preparation condition. The calcined nanodots consist of an amorphous TiO2matrix with Eu3+ions highly dispersed in it. The Eu-doped TiO2nanodots exhibit intense luminescence due to effective energy transfe...

Orthorhombic ZrTiO4 is an attractive dielectric material; its optical properties are, however, less known. In this paper, we reported on the microstructure and luminescence studies of pristine Eu3+-doped phosphors. The results indicated that two types TiO6 octahedra, isolated/ localized coupled/delocalized, coexisted in host matrix. Eu3+ doping could induce oxygen vacancy defect states located ...

Lots of efforts have been vested recently on tuning the structure and optical properties, particularly for luminescent nanophosphors. High pressure in that direction has shown great potential to tune performance However, very little attention paid properties technologically important La2Zr2O7 (LZO) pyrochlore nanoparticles (NPs) its doped counterpart La2Zr2O7:Eu3+ (LZOE) NPs under elevated pres...

Bài báo chỉ ra các kết quả nghiên cứu tính chất đặc trưng và khả năng phát quang của vật liệu nano BaMoO4 pha tạp ion Eu3+ (BME). Vật BME (pha 0,1 đến 9,0 mol% Eu3+) đã được tổng hợp thành công bằng phương pháp thủy nhiệt. Kết cấu trúc thông qua giản đồ nhiễu xạ tia X (XRD) cho thấy, tinh dạng thể đơn phaphù với tứ giác (theo thẻ chuẩn JCPDS 00-029-0193). Các nhóm liên Eu-O, Mo-O MoO42- khẳng đ...

The controlled synthesis of Fe0.5Gd0.5(MoO4)1.5:Eu microcrystals (self-aggregated 3D su‐ perstructures) using hydrothermal method by employing PVP as surfactant along with the state of the art of this field at present. By varying the reaction time, we have reported the morphology selection and the condition to derive novel nanoparticle sheathed bipyr‐ amid-like morphology. The rest of the param...

A facile wet chemical synthesis method was used to prepare a range of single-crystal Na(Y1.5 Na0.5)F6 nanorods with controllable aspect ratios. Their novel multicolor upconversion (UC) fluorescence has been successfully realized by doping Yb3+/Er3+ (green) and Yb3+/Tm3+ (blue) ion pairs. When doped with Eu3+ and Tb3+ ions, the strong red and green downconversion (DC) fluorescence has also been ...

Rare-earth ion Eu3+ was doped into SrTiO3 ceramic to improve its dielectric energy storage properties and act as luminescence centres. Typically, ceramics with 0.2% exhibit high breakdown strength up 354 kV/cm a relatively recoverable density of 2.13 J/cm3. Compared those the undoped sample, are enhanced by about 22% 58%, respectively. The doping effect can be explained inhibition long-range mo...