Growth, Morphology and Characterization of Yb : YVO4 Crystal

Abstract

An Yb : YVO 4 single crysal with good optical quality and large size has been grown by the Czochralski method. We have discussed the growth shape of Yb : YVO 4 single crystal which is composed of f100g and f101g simple forms. The data of thermal expansion and specific heat of the crystal have been measured. The thermal expansion coefficients along a-and c-axis directions are a 1 1X5 Â 10 À6 /K and a 3 8X2 Â 10 À6 /K, respectively. The specific heat is 30.4 cal/mol K at 320 K. The absorption and fluorescence spectra have been measured.

Synthesis, crystal structure and luminescent properties of pyrovanadates A2CaV2O7 (A=Rb, Cs)

“…Despite the large number of publications about luminescence properties of vanadates [1][2][3][4][5][6][7][8][9][10][11][12], the available experimental and theoretical data are not sufficient to give a unifying explanation of the nature of the luminescence centers in these compounds. There have been attempts to explain the nature of the bands in the optical spectra of vanadates by the presence of vanadium-oxygen clusters such as [VO 4 [12] (Table 4)).…”

“…Complex vanadium oxide compounds have drawn the attention of researchers and developers as promising luminescent materials [1][2][3][4][5][6][7][8][9][10][11][12]. The technical applications of vanadium oxides compounds have been proved by dozens of patents [5,6].…”

“…On the basis of complex vanadium oxides different luminescence materials have been developed and suggested, such as phosphors for plasma display panels and field-emission displays (YVO 4 :Eu) [2,3,5,6] or active laser media (YVO 4 :Ln (Ln ¼ Nd, Er, Tm, Ho)) [7][8][9][10], Ca 3 (V-O 4 ) 2 :Nd 3þ [4]. Effective and advanced crystals for diode pumped lasers can be made from YVO 4 :Nd 3þ [9,10] while luminescent screens with various luminescence spectra [3,[5][6][7][8][9][10][11][12] can be made from (Y, Gd, Lu)VO 4 , dark blue, l ¼ 470-480 nm [3], ScVO 4 , green, l ¼ 510-520 nm [3] and LuVO 4 , red , l ¼ 600-610 nm [3].…”

Structural, thermal and mechanical properties of transparent Yb:(Y0.97Zr0.03)2O3 ceramic

“…The light absorption of laser material causes thermal gradient which may disturb the laser oscillation and directly affect the quality of laser beam and laser efficiency. 10 Moreover, the thermal gradients can also lead to material fracture if they are high enough. The mechanical properties of laser material are very important for the equipment design and practical use.…”

Hydrothermal Synthesis and Microstructural, Optical Properties Characterization of YVO4Phosphor Powder

“…For example, YVO 4 :Eu 3+ is a steadfast luminescent material used in color television, the high--pressure mercury lamp and as a scintillator in medical image detectors for more than 20 years [1]. Nd: YVO 4 crystal rather than Nd:YAG has been commercialized as laser device for its excellent monochromaticity and stability [2]. Forbes et al [3] reported the synthesis, solubility and growth of large YVO 4 and Nd:YVO 4 transparent single crystals in aqueous NaOH under hydrothermal conditions.…”