Zobrazeno 1 - 5
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pro vyhledávání: '"623"'
Publikováno v:
Journal of Solid State Chemistry. 122:324-332
Hydroxycarbonate precursors with different Cu/Zn/Co/Al/Cr atomic ratios were prepared by coprecipitation of the metal nitrates with a stoichiometric amount of NaHCO3under controlled conditions of temperature, stirring, and pH. Cu–Zn–Co–Al–Cr
Publikováno v:
Journal of Solid State Chemistry. 121:372-378
Copper-zinc-cobalt-aluminium-containing crystalline hydroxycarbonates having hydrotalcite structure have been prepared by coprecipitation. X-ray powder diffraction (XRPD), magnetic susceptibility, and extended X-ray absorption fine structure (EXAFS)
Publikováno v:
Journal of Solid State Chemistry. 89:167-173
Samples of CuCo mixed oxide with Cu Co = 0.25 to 1.0 (atomic ratio) were prepared by coprecipitation with Na2CO3 and were characterized with TG, DSC, XRD, and XPS. Exothermic DSC peaks were observed at 588 and 808 K for Cu Co = 0.25 , and at 588,
Autor:
Fatih Zighem, Kahina Ait Atmane, Frédéric Ott, Jérémie Margueritat, Jean-Yves Piquemal, Mona Ibrahim, Grégory Chaboussant, Guillaume Viau, Yaghoub Soumare, Rym Boubekri, Frédéric Schoenstein, Noureddine Jouini, T. Maurer
Publikováno v:
Journal of Solid State Chemistry
Journal of Solid State Chemistry, Elsevier, 2013, 197, pp.297. ⟨10.1016/j.jssc.2012.08.009⟩
Journal of Solid State Chemistry, 2013, 197, pp.297. ⟨10.1016/j.jssc.2012.08.009⟩
Journal of Solid State Chemistry, Elsevier, 2013, 197, pp.297. ⟨10.1016/j.jssc.2012.08.009⟩
Journal of Solid State Chemistry, 2013, 197, pp.297. ⟨10.1016/j.jssc.2012.08.009⟩
We present in this paper the structural and magnetic properties of high aspect ratio Co nanoparticles (~10) at high temperatures (up to 623 K) using in situ X ray diffraction (XRD) and SQUID characterizations. We show that the anisotropic shapes, the
Publikováno v:
Journal of Solid State Chemistry. 142:382-392
Several Co/Mg/Al layered double hydroxides (LDH) with (Mg2++Co2+)/Al3+=2 and 3 and Mg2+/Co2+ranging from 0 to 4 have been synthesized by coprecipitation at pH=9 and NO−3as main compensating anions. All samples present well-crystallized layered stru