Size dependent magnetic phase of nanocrystalline Co0.2Zn0.8Fe2O4

Co 0.2 Zn 0.8 Fe 2 O 4 nanoparticles have been synthesized by the coprecipitation method. Nanoparticles with average particle size of 5–∼65 nm were obtained by sintering the samples from 393 to 1173 K. Magnetic measurements show that samples with particle size ⩽13 nm are superparamagnetic above the...

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Bibliographic Details
Published in:Journal of applied physics 2001-10, Vol.90 (8), p.4138-4142
Main Authors: Dey, S., Roy, A., Ghose, J., Bhowmik, R. N., Ranganathan, R.
Format: Article
Language:English
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Summary:Co 0.2 Zn 0.8 Fe 2 O 4 nanoparticles have been synthesized by the coprecipitation method. Nanoparticles with average particle size of 5–∼65 nm were obtained by sintering the samples from 393 to 1173 K. Magnetic measurements show that samples with particle size ⩽13 nm are superparamagnetic above the blocking temperature TB. Samples with average particle size larger than 13 nm have a wide particle size distribution and show the presence of two magnetic phases: superparamagnetic and cluster glass. Cation distribution of the samples show that in the samples with particle size
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1401798