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Structure and microstructure of magnetic intercalated vermiculites

Arancha Argüelles 1,2,  Matteo Leoni 3,  Charles H. Pons 4,  Cristina De la Calle 5,  Sergei A. Khainakov 6,  Jesús A. Blanco 1,  Celia Marcos 7

1. University of Oviedo, Department of Physics, C/ Calvo Sotelo, Oviedo 33007, Spain
2. Instituto Tecnologico de Materiales (ITMA), Parque Tecnológico del Principado de Asturias, C/ Calafates, Parcela L-3.4, Avilés 33417, Spain
3. Department of Material Engineering and Industrial Tecnology, University of Trento (DIMTI), v. Mesiano 77, Trento 38100, Italy
4. Institut des Sciences de la terre d'Orléans (ISTO), 1A, rue de la férollerie, Orléans 45071, France
5. Instituto de Ciencia de Materiales de Madrid, CSIC (ICMM, CSIC), Cantoblanco, Madrid 28049, Spain
6. University of Oviedo, Department of organic and inorganic chemistry, C/Julián Clavería, Oviedo 33006, Spain
7. University of Oviedo, Jesus Arias de Velasco, Oviedo Oviedo, Spain

Abstract

Vermiculite Intercalation Compounds (VIC’s) have been prepared from Mg-vermiculite from Santa Olalla (Huelva, Spain). Magnetic cations (Fe, Ni) have been introduced in the interlamellar space by ion-exchange, in order to study the magnetic behaviour of the resulting systems. In the present work, structure and microstructure of the VIC’s resulting from these diffusion processes have been analyzed by microprobe and X-ray powder diffraction techniques. Data has been refined by means of the DIFFaX+ software, as these compounds are showed to have a semi-ordered structure, like the starting vermiculite. Variations in the structure parameters induced by the presence of the new cations (Fe, Ni) have been analyzed.

 

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Presentation: Poster at 11th European Powder Diffraction Conference, Poster session, by Matteo Leoni
See On-line Journal of 11th European Powder Diffraction Conference

Submitted: 2008-04-29 23:46
Revised:   2009-06-07 00:48