Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Ali Boukhari"'
Autor:
Elisabeth Antic-Fidancev, J. Aride, M Taibi, A. Ben Ali, Bruno Viana, Ali Boukhari, P. Aschehoug
Publikováno v:
Journal of Alloys and Compounds. :673-677
Europium alkaline earth borophosphates A 1− x Eu x BPO 5 (A=Ca, Sr, Ba or Pb), were synthesized in two ways: solid state reaction or coprecipitation. The dielectric measurements were performed to resolve the ambiguity between different space groups
Publikováno v:
Journal of Alloys and Compounds. 205:243-247
Characterization of powder samples of Zn 2− x M x P 2 O 7 (M = Mn, Cu; x = 0–2) shows that substitution of small amounts of Cu or Mn into low temperature or α-Zn 2 P 2 O 7 stabilizes a solid form isostructural with β-Zn 2 P 2 O 7 , the high tem
Publikováno v:
Journal of Solid State Chemistry. 104:453-459
SrNi 2 (PO 4 ) 2 is triclinic, with space group P 1 , Z = 2, and cell parameters a = 5.468(1) A, b = 6.667(1) A, c = 9.156(1) A, α = 110.58(1)°, β = 100.87(1)°, γ = 98.01(1)°. A full matrix least squares refinement led to R = 0.032, R w = 0.041
Publikováno v:
Journal of Alloys and Compounds. 188:128-132
Domains of composition of Cd 2− x A x P 2 O 7 , 0 ⩽ × ⩽2, A Sr, Mg, and Ni, have been established by powder diffraction methods. Solid solutions have been found near Cd 2 P 2 O 7 and A 2 P 2 O 7 , A Sr, Mg and Ni. New phases have been
Publikováno v:
Journal of Crystallographic and Spectroscopic Research. 21:321-326
Na2CoP2O7 may be prepared in two allotropie forms:I, rose,M r =278.85, triclinic, P1,a=9.735(2),b=10.940(3),c=12.289(4) A,α=148.78,β=121.76(1), γ=68.38(2)°,V=566.8(2) A3,Z=4,D meas=3.28(5) g cm−3,D calc=3.267 g cm−3, λ(MoKα)=0.71069 A,μ=37
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 47:473-477
(I) CdSrP 2 O 7 cristallise dans P2 1 /n avec a=5,414, b=8,615, c=12,878 A, β=90,01°, Z=4; affinement jusqu'a R=6,0%. (I) CdBaP 2 O 7 cristallise dans P1 avec a=5,641, b=7,038, c=7,624 A, α=78,55, β=89,83, γ=86,79°, Z=2; affinement jusqu'a R=6,