STRUCTURE AND DEVITRIFICATION CHEMISTRY OF RE(PO<SUB>3</SUB>)<SUB>3</SUB> (RE=La, Pr, Nd, Gd, Dy, Y) METAPHOSPHATE GLASSES
نویسندگان
چکیده
منابع مشابه
Powder X-Ray Reference Patterns of Sr2RGaCu2Oy (R = Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Y)
X-Ray Rietveld refinements were conducted on a series of eleven lanthanide phases, Sr2RGaCu2O y (2112 phase, R = Pr, Nd, Sm, Eu, Gd, Dy, Ho, Y, Er, Tm, and Yb) that are structurally related to the high T c superconductor Ba2YCu3O7 (213). In the 2112 structure, instead of square planar Cu-O chains, tetrahedral GaO4 chains were found to run in a zig-zag fashion along the diagonal of the basal 213...
متن کاملSyntheses, structure, some band gaps, and electronic structures of CsLnZnTe3 (Ln=La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Y).
Eleven new quaternary rare-earth tellurides, CsLnZnTe3 (Ln=La, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, and Y), were prepared from solid-state reactions at 1123 K. These isostructural materials crystallize in the layered KZrCuS3 structure type in the orthorhombic space group Cmcm. The structure is composed of LnTe6 octahedra and ZnTe4 tetrahedra that share edges to form [LnZnTe3] layers. These layer...
متن کاملAnalysis of interdiffusion of Dy, Nd, and Pr in Mg
The diffusion characteristics of Mg–rare-earth diffusion couples were studied. Cylinders of pure Mg and rare earth (Dy, Nd, and Pr) were abutted and annealed at 500 °C for 100 h or 300 h. Point-by-point composition profiles were collected starting in pure Mg, across the diffusion zone, and ending in the pure rare earth, using energy dispersive x-ray spectroscopy with a scanning electron microsc...
متن کاملMagnetic properties of amorphous Fe 80 - xRxB 20 ( with R = Pr , Nd , Sm , Gd , Dy , Ho , Er and Tm )
Amorphous Fe80-xRxB20 alloys (with R=Pr, Nd, Sm, Gd, Dy, Ho, Er and Tm ) have been prepared by melt spinning and their magnetic properties have been studied. The Gd moment at 4.2 K is found to be 7μB which agrees with the theoretical value indicating a collinear spin structure. The moments of the other rare-earth are lower than the theoretical value, implying a conical spin structure. The mean-...
متن کاملCrystal Structures and Reference Powder Patterns of BaR2ZnO5 (R = La, Nd, Sm, Eu, Gd, Dy, Ho, Y, Er, and Tm)
Reference x-ray powder patterns and the crystal structures of the lanthanide com-determined by the x-ray Rietveld refinement technique. A structural trend was confirmed for this series of compounds. The compounds with smaller ionic radii are isostructural to the orthorhombic " green phase " (BaY2CuO5). The lattice parameters for compounds with R = Tm to Sm range from R is seven-fold coordinated...
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ژورنال
عنوان ژورنال: Phosphorus Research Bulletin
سال: 2002
ISSN: 0918-4783
DOI: 10.3363/prb1992.13.0_137