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http://nopr.niscpr.res.in/handle/123456789/21028| Title: | Effect of processing parameters on the magnetic properties of Ni0.8Zn0.2Fe2O4 |
| Authors: | Patil, SA Patole, S N Deshpande, C E Date, S K |
| Issue Date: | May-2001 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Polycrystalline nickel-zinc ferrite powder has been obtained by chemical co-precipitation, involving the corresponding metal nitrates and sodium hydroxide under the different processing parameters for precipitation from those reported in our earlier paper [1, Anilkumar et al., Mater Lett, 27(1996) 293]. The precipitate, when dried at 80°C in air shows cubic ferrite with lower values for Ms ≈ 17.7emu/g (Ms ≈ 44 emu/g as reported in the earlier paper cited above). Different modes of drying such as IR drying, microwave drying do not improve Ms values. On the other hand, Ms value improves substantially when the precipitate is further processed hydrothermally. When calcined at 1200°C/4h in air, all the samples reach 96-100% of the saturation value (Ms ≈77 emu/g). All these experimental results (XRD, VSM) are analyzed in terms of the microscopic inhomogeneity (structural and chemical) of the precipitated and calcined samples. |
| Page(s): | 497-499 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.40A(05) [May 2001] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 40A(5) 497-499.pdf | 662.04 kB | Adobe PDF | View/Open |
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