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Crystallization of Pb x Sr 1‐x (NO 3 ) 2 Solid Solutions from Aqueous Solutions
Author(s) -
Wu L.J.,
Chen W.C.,
Li C.R.,
Liu Y.C.,
Ma W.Y.,
Liang J.K.
Publication year - 2000
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200005)35:5<601::aid-crat601>3.0.co;2-p
Subject(s) - solid solution , electron microprobe , aqueous solution , lattice constant , crystallization , phase diagram , chemistry , diffraction , analytical chemistry (journal) , crystallography , crystal structure , doping , ion , powder diffraction , phase (matter) , materials science , mineralogy , chromatography , physics , optoelectronics , organic chemistry , optics
Abstract A series of Pb x Sr 1‐x (NO 3 ) 2 crystals have been grown from aqueous solutions and characterized by X‐ray powder diffraction. All diffraction data were well indexed according to the simple cubic structure. The variation of lattice constants with the concentrations of Pb 2+ in the crystals accorded quite well to the Vegard's Law. The composition of the Sr(NO 3 ) 2 crystal doped with Pb 2+ was studied by electron microprobe and it was found that Pb 2+ was enriched in the 111 sectors. Equilibrium behavior in the Pb(NO 3 ) 2 ‐Sr(NO 3 ) 2 ‐H 2 O system was analyzed by Lippmann's phase diagram and the equilibrium distribution coefficient D Pb =133.6. This large value of D indicates that Pb 2+ ion is preferentially distributed to the solid phase.