Search

Abstract: A new double borate Li6Lu(BO3)3:Ce crystal with dimensions up to Φ35×21mm3 was prepared by the Czochralski method. The X-ray diffraction pattern of the crystal was measured. The melting point and solidifying point of the Li6Lu(BO3)3:Ce crystal were measured by DSC. Its luminescence properties at room temperature were investigated by ultraviolet fluorescence spectrometer and X-ray stimulated luminescence (XSL) spectrometer. According to these dates, we consider that the Li6Lu(BO3)3:Ce crystal is a promising scintillator. [Copyright &y& Elsevier]

Abstract: The isothermal section of the Ho–Fe–Cr ternary system was investigated by means of X-ray powder diffraction (XRD), metallography and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). The ternary compound HoFe12−x Cr x (x =2) was characterized and the homogeneity range of the various ternary solutions was studied. It crystallizes with ThMn12-type structure, space group I4/mmm and unit parameters a =0.8406nm and c =0.4756nm. The homogeneity range in HoFe12−x Cr x was determined as x =1.9–3.6, i.e. 14.6–27.7at.% Cr. The maximum solid solubilities of Cr in Fe, Ho2Fe17, Ho6Fe23, HoFe3 and HoFe2 are about 28.0at.%, 4.0at.%, 13.0at. %, 3.0at.% and 11.0at.%, respectively. [ABSTRACT FROM AUTHOR]

Abstract: The phase relations of the ternary system Ce–Al–Cu in the Cu-poor part at 503K were investigated by X-ray powder diffraction (XRD). The investigated composition region consists of 16 single-phase, 32 two-phase and 17 three-phase regions. At 503K, the maximum solid solubilities of Cu in Al, α-Ce3Al11, CeAl3 and CeAl2 are about 2.5at.%, 1.6, 3.6 and 5.3, respectively, and Al in CeCu5 is about 39.2at.%. The homogeneity ranges of Al2Cu and AlCu phases extend from about 32.1 to 32.6at.% Cu and 49.7 to 52.4at.% Cu, respectively. Five ternary compounds and their solid solutions have been observed in this work: CeAl12−x Cu x (4.0≤ x ≤4.52), Ce2Al17−x Cu x (6.50≤ x ≤7.55), CeAl13−x Cu x (6.62≤ x ≤6.92), CeAl4−x Cu x (0.74≤ x ≤1.10) and CeAlCu. [Copyright &y& Elsevier]