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Magnetic Behavior of Na2MSi4O10(M=Co, Ni) Compounds

✍ Scribed by G. Durand; S. Vilminot; M. Richard-Plouet; A. Derory; J.P. Lambour; M. Drillon

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
279 KB
Volume
131
Category
Article
ISSN
0022-4596

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✦ Synopsis

Na 2 M Si 4 O 10 (M ‫؍‬ Co, Ni) compounds have been obtained by annealing at 700Β°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 8 O 20 ) 8؊ units. The M cations define isolated (M 2 O 8 ) 4؊ dimers from two edge-sharing square pyramids with M-M distances of around 3.17 A > . The magnetic properties have been analyzed as the presence of ferromagnetic interactions inside the dimers and antiferromagnetic interactions between the dimers at low temperature.

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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

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