Sample number/codes of ferrite nanoparticles prepared before and after calcination with various CTAB content.
| % of CTAB | Uncalcined samples | Calcined samples 250 °C |
|---|---|---|
| 0 | S1 | C1 |
| 1.5 | S2 | C2 |
| 3 | S3 | C3 |
| 5 | S4 | C4 |
| 20 | S5 | C5 |
| 30 | S6 | C6 |
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