Sharma, Ram Kripal and Suwalka, Omprakash and Lakshmi, N and Venugopalan, K and Banerjee, A and Joy, P. A. (2005) Synthesis of chromium substituted nano particles of cobalt zinc ferrites by coprecipitation. Materials Letters, 59 (27). 3402 - 3405.
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Official URL: http://www.sciencedirect.com/science/article/B6TX9...
Abstract
Nano particles of chromium substituted cobalt zinc ferrite have been synthesized by a chemical co-precipitation method. X-ray diffraction studies of the nano particles of CrxCo0.5−xZn0.5Fe2O4 (x = 0.1 to 0.5) heat-treated at 300 °C show that the particle sizes are in the range of 2 to 7 nm. Room temperature Fe-57 Mössbauer spectra of all the samples show only two doublets, confirming the presence of superparamagnetic relaxation in the nano particles. An exponential decrease in the superparamagnetic blocking temperature, with increasing chromium concentration, is observed for these samples.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nano particles of chromium substituted cobalt zinc ferrite have been synthesized by a chemical co-precipitation method. X-ray diffraction studies of the nano particles of CrxCo0.5−xZn0.5Fe2O4 (x = 0.1 to 0.5) heat-treated at 300 °C show that the particle sizes are in the range of 2 to 7 nm. Room temperature Fe-57 Mössbauer spectra of all the samples show only two doublets, confirming the presence of superparamagnetic relaxation in the nano particles. An exponential decrease in the superparamagnetic blocking temperature, with increasing chromium concentration, is observed for these samples. Nano materials; Co0.5Zn0.5Fe2O4; Mössbauer spectroscopy |
| Subjects: | Material Science > Nanofabrication processes and tools Material Science > Nanostructured materials |
| ID Code: | 6838 |
| Deposited By: | SPI |
| Deposited On: | 30 Sep 2009 18:00 |
| Last Modified: | 30 Sep 2009 18:00 |
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