Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Z. El Fadli"'
Publikováno v:
Journal of Materials and Environmental Sciences. 8:4323-4328
Autor:
D. Beltran, Aurelio Beltrán, José-Vicente Folgado, Fernando Sapiña, M. R. Metni, E. Martínez, Z. El-Fadli
Publikováno v:
Journal of Materials Chemistry. 10:437-443
Series of perovskite oxides with the composition LaMn1 − xMxO3 + δ (M = Cr, Co; 0 ≤ x ≤ 1) have been synthesized by thermal treatment of precursors obtained by freeze-drying of acetic acid solutions. The oxides have been characterized by X-ray
Autor:
Aurelio Beltrán, V. Madurga, E. Martínez, J. Vergara, Fernando Sapiña, Z. El-Fadli, K. V. Rao, R. J. Ortega-Hertogs
Publikováno v:
Physical Review B. 60:1127-1135
An alloy series of single-phased polycrystalline ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Na}}_{x}{\mathrm{MnO}}_{3+\mathrm{\ensuremath{\delta}}} (0l~xl~0.15)$ has been synthesized in order to study the effect of disorder on the electronic propertie
Publikováno v:
Journal of Materials Chemistry. 9:1793-1800
Single-phase perovskites in the solid solution series La 0.85 (Na 1– x K x ) 0.15 MnO 3 (0≤x≤1) have been obtained using a soft treatment, which makes possible strict stoichiometric control. X-Ray powder diffraction patterns of these compounds
Autor:
R.J. Ortega, Fernando Sapiña, T. Boix, Z. El-Fadli, K. V. Rao, Aurelio Beltrán, E. Martínez, J. Vergara
Publikováno v:
Chemistry of Materials. 10:1569-1575
Single-phase perovskites in the solid solution series La1-xNaxMnO3+δ have been obtained using a soft treatment, which makes possible strict stoichiometric control. Under these conditions, it become...
Publikováno v:
Materials Research Bulletin. 30:671-678
Study by X-ray diffraction of various mixtures of CaS and Yb 2 S 3 after heating at 1200 °C, reveals the existence of continuous domains of solid solutions with successively a NaCl-type cubic unit cell (parameter a), a cubic unit cell (parameter 2a)
Publikováno v:
ChemInform. 25
Publikováno v:
ChemInform. 26
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 50:1373-1375
The Yb and Ca atoms have slightly distorted octahedral environments and the K atom has regular sixfold prismatic coordination. The sites are completely (Yb, Ca) or partially (Yb, K) occupied. The compound crystallizes with a layer structure; each lay
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 50:166-168
The Yb atoms occupy independent, slightly distorted octahedral sites. All the metal sites are fully occupied. The structure consists of pairs of [YbS 6 ] octahedra forming chains parallel to the axis. In this direction, between two pairs of octahedra