Research Article
Sonochemical Synthesis of Cobalt Ferrite Nanoparticles
Table 1
Characterization of cobalt ferrite nanoparticles and comparison with the literature.
| | Method of synthesis | Particle size (nm) | Coercivity (Oe) | Magnetic saturation
(emu/g) | Magnetic remanence (emu/g) | Remanence ratio
|
| | Present study | 24 | 1049 | 25.7
(No calcination) | 8.78 | 0.341 | | Autocombustion [10] | 22.7 | 760 | 24.46
( =200°C) | 8.80 | 0.359 | | Sonochemical synthesis through carbonyl route [19] | <10 | ND | Superparamagnetic behavior without calcination
22
( = 450°C)
45
( = 700°C) | ND | ND | | Thermal treatment [34] | 41 | 1002 | 28.5
( = 650°C) | 11.61 | 0.407 | | Sol-gel [5] | 15 | 1215 | 67.0
( = 570°C) | 30.2 | 0.45 | | Coprecipitation [35] | 13.8 | 193 | 58.3
( = 80°C) | 16.5 | 0.28 | | Microemulsion [36] | <50 | 1440 | 65.0
( = 600°C) | 29 | 0.44 | | Mechanical Milling [37] | 12.2 | 940 | 81.2
( = 22°C) | 50.61 | 0.62 |
|
|
: calcination temperature, ND: not determined.
|
