Aqueous synthesis of non-superparamagnetic MnFe2O4 nanoparticles and their magnetic properties

N. Sivakumar; A. Narayanasamy; R. Justin Joseyphus; B. Jeyadevan; K. Tohji

doi:10.1063/1.2721267

Aqueous synthesis of non-superparamagnetic MnFe₂O₄ nanoparticles and their magnetic properties

N. Sivakumar, A. Narayanasamy, R. Justin Joseyphus, B. Jeyadevan, K. Tohji

ENV - Environmental Studies for Advanced Society

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Nanocrystalline MnFe₂O₄ particles with average particle diameters 50 nm and less were synthesized by using the oxidation method. The superparamagnetic behavior, which is influenced by the particle size, was controlled by varying the concentration of the oxidant. The Mössbauer spectrum showed only sextets corresponding to the A- and B-sites of the ferrite, when the particle size is larger than 50 nm. However, the appearance of superparamagnetic doublet was recorded for the manganese ferrite particles synthesized using higher concentration of oxidant. The saturation magnetization of the particles larger than 50 nm was almost equal to their bulk counter part.

Original language	English
Title of host publication	WATER DYANMICS
Subtitle of host publication	4th International Workshop on Water Dynamics
Pages	147-150
Number of pages	4
DOIs	https://doi.org/10.1063/1.2721267
Publication status	Published - 2007
Event	4th International Workshop on Water Dynamics - Sendai, Japan Duration: 2006 Nov 7 → 2006 Nov 8

Publication series

Name	AIP Conference Proceedings
Volume	898
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	4th International Workshop on Water Dynamics
Country	Japan
City	Sendai
Period	06/11/7 → 06/11/8

Keywords

Manganese zinc ferrite
Nanoparticles
Oxidation method
Superparamagnetic

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2721267

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Aqueous synthesis of non-superparamagnetic MnFe₂O₄ nanoparticles and their magnetic properties. / Sivakumar, N.; Narayanasamy, A.; Joseyphus, R. Justin; Jeyadevan, B.; Tohji, K.

WATER DYANMICS: 4th International Workshop on Water Dynamics. 2007. p. 147-150 (AIP Conference Proceedings; Vol. 898).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sivakumar, N, Narayanasamy, A, Joseyphus, RJ, Jeyadevan, B & Tohji, K 2007, Aqueous synthesis of non-superparamagnetic MnFe₂O₄ nanoparticles and their magnetic properties. in WATER DYANMICS: 4th International Workshop on Water Dynamics. AIP Conference Proceedings, vol. 898, pp. 147-150, 4th International Workshop on Water Dynamics, Sendai, Japan, 06/11/7. https://doi.org/10.1063/1.2721267

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