Synthesis, characterization and magnetic properties of disk-shaped particles of a cobalt alkoxide: Coii(C2H4O2)
- 10 January 2005
- journal article
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 29 (2), 355-361
- https://doi.org/10.1039/b411117f
Abstract
A cobalt alkoxide, Co(OCH2CH2O), has been prepared from the reaction of cobalt acetate with ethanediol. This compound crystallizes as disk-shaped particles with diameter and thickness in the 0.4–1 µm and 100–250 nm ranges, respectively. Structural characterization (X-ray and electron diffraction) shows a layered arrangement with a brucite-like structure presenting a turbostratic disorder. The interlayer spacing and the Co⋯Co distance within the layer are c = 8.27 Å and a = 3.09 Å, respectively. UV-visible spectroscopy studies established that the Co(II) ions are located on octahedral sites. IR spectroscopy showed that the ethylene glycolate anions (OCH2CH2O)2− chelate the Co(II) cations. The magnetic properties of the compound were measured in the range of 2–300 K. Below 20 K, the compound exhibits 3D ferromagnetic order and the hysteresis loop shows a very high remanence-to-saturation ratio typical of a uniaxial magnetocrystalline anisotropy.Keywords
This publication has 44 references indexed in Scilit:
- Magnetic properties of Ni1−x−yCoxFey films deposited by polyol electroless processMaterials Letters, 2003
- Some Insights on the Use of Polyols-Based Metal Alkoxides Powders as Precursors for Tailored Metal-Oxides ParticlesChemistry of Materials, 2003
- Towards direct synthesis of fct-FePt nanoparticles by chemical routeJournal of Applied Physics, 2003
- Hybrid Organic‐Inorganic Multilayer Compounds: Towards Controllable and/or Switchable MagnetsPublished by Wiley ,2001
- Magnetic properties of ultrafine cobalt ferrite particles synthesized by hydrolysis in a polyol mediumJournal of Materials Chemistry, 2000
- Synthesis of monodisperse Au, Pt, Pd, Ru and Ir nanoparticles in ethylene glycolNanostructured Materials, 1999
- Ferrimagnetism in dicarboxylate‐bridged cobalt hydroxide layersJournal of Materials Chemistry, 1999
- Submicrometer zinc oxide particles: Elaboration in polyol medium and morphological characteristicsJournal of Materials Research, 1995
- Controlled nucleation and growth of micrometre-size copper particles prepared by the polyol processJournal of Materials Chemistry, 1993
- Crystal and molecular structure of cobalt(II) monoglycerolateActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1971