Magnetic behavior of Na{sub 2}MSi{sub 4}O{sub 10} (M = Co, Ni) compounds

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7389· OSTI ID:576434

Durand, G; Richard-Plouet, M; Derory, A ^[1]

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1. UMR 46 CNRS, Strasbourg (France); and others

Na{sub 2}MSi{sub 4}O{sub 10} (M = Co, Ni) compounds have been obtained by annealing at 700{degrees}C a xerogel prepared from silicon and sodium ethoxides and M nitrate. Both silicates appear to be isostructural with the corresponding copper phase, with the presence of silicate pipes built up from (Si{sub 8}O{sub 20}){sup 8-} units. The M cations define isolated (M{sub 2}O{sub 8}){sup 4-} dimers from two edge-sharing square pyramids with M-M distances of around 3.17 {angstrom}. The magnetic properties have been analyzed as the presence of ferromagnetic interactions inside the dimers and antiferromagnetic interactions between the dimers at low temperature.

• OSTI ID: 576434
• Journal Information: Journal of Solid State Chemistry, Vol. 131, Issue 2; Other Information: PBD: Jul 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SODIUM OXIDES
SILICON OXIDES
COBALT OXIDES
NICKEL OXIDES
PHASE STUDIES
ANNEALING
DIMERS
MAGNETIC PROPERTIES