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Investigations into Phase Formation of Decomposed Ni0.5Zn0.5Fe2(C2O4)3 6 H2O Solid Solution Oxalates

✍ Scribed by S. Fischer; Doz. Dr. H. Langbein; C. Michalk; K. Knese; U. Heinecke

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 324 KB
Volume: 26
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170260506

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✦ Synopsis

Homogeneous solid solution oxalates of Ni(I1)-, Fe(I1)-and Zn(I1) were prepared by coprecipitation from metal acetate solution with oxalic acid. Using Mossbauer spectroscopy, XRD, magnetic measurement and IR-spectroscopy, the thermal decomposition of Nio,SZno,5Fe,(C,0,), . 6 H 2 0 and the formation process of Nio,sZno.sFe,04 were investigated.

At temperatures between 300 and 400 "C the thermal decomposition of the Ni-Zn-Fe solid solution oxalates leads to ferrites of spinel structure, but areas with a different content of Ni and Zn are provable by Mossbauer spectroscopy. After tempering at 750 "C homogeneous ferrites arise.

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