Investigations into Phase Formation of Decomposed Ni0.5Zn0.5Fe2(C2O4)3 6 H2O Solid Solution Oxalates
- 1 January 1991
- journal article
- research article
- Published by Wiley in Crystal Research and Technology
- Vol. 26 (5) , 563-569
- https://doi.org/10.1002/crat.2170260506
Abstract
Homogeneous solid solution oxalates of Ni(II)‐, Fe(II)‐ and Zn(II) were prepared by coprecipitation from metal acetate solution with oxalic acid. Using Mössbauer spectroscopy, XRD, magnetic measurement and IR‐spectroscopy, the thermal decomposition of Ni0.5Zn0.5Fe2(C2O4)3 · 6 H2O and the formation process of Ni0.5Zn0.5Fe2O4 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 Mössbauer spectroscopy. After tempering at 750 °C homogeneous ferrites arise.Keywords
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