Autor: | G. B Mcgarvey, D. G Owen |
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Rok vydání: | 1998 |
Předmět: | |
Zdroj: | Journal of Materials Science. 33:35-40 |
ISSN: | 0022-2461 |
DOI: | 10.1023/a:1004325108714 |
Popis: | Nickel ferrite powders with particle sizes in the 3–5 μm range have been prepared from coprecipitated nickel–iron oxalate precursors. Firing the nickel–iron oxalate precursor in the range 300–1100°C produced samples of high chemical purity, while introducing significant variations in the distribution of crystallite sizes and surface morphologies. An increase in the powder density from 4.2 to 5.2 g cm-3 and a decrease in the surface area of the nickel ferrite from 120 to 0.2 m2g-1 were effected by increasing the firing temperature to 1100°C. |
Databáze: | OpenAIRE |
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