Issue 1, 2006
From the journal:

Journal of Materials Chemistry

MnO and NiO nanoparticles: synthesis and magnetic properties

Moumita Ghosh,ab   Kanishka Biswas,ab   A. Sundaresana  and  C. N. R. Rao*ab  

* Corresponding authors

a Chemistry and Physics of Materials Unit and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bangalore-560064, India
E-mail: cnrrao@jncasr.ac.in
Fax: (+91) 80 22082760

b Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore-560012, India

Abstract

Nanoparticles of MnO with average diameters in the 6–14 nm range have been prepared by the decomposition of manganese cupferronate in the presence of TOPO, under solvothermal conditions. Nanoparticles of NiO with average diameters in the 3–24 nm range have been prepared by the decomposition of nickel cupferronate or acetate under solvothermal conditions. The nanoparticles have been characterized by X-ray diffraction and transmission electron microscopy. Both MnO and NiO nanoparticles exhibit supermagnetism, accompanied by magnetic hysteresis below the blocking temperature (TB). The TB increases with the increase in particle size in the case of NiO, and exhibits the reverse trend in the case of MnO.

Graphical abstract: MnO and NiO nanoparticles: synthesis and magnetic properties

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Article information

DOI
https://doi.org/10.1039/B511920K
Article type
Paper
Submitted
22 Aug 2005
Accepted
22 Sep 2005
First published
13 Oct 2005

J. Mater. Chem., 2006,16, 106-111

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MnO and NiO nanoparticles: synthesis and magnetic properties

M. Ghosh, K. Biswas, A. Sundaresan and C. N. R. Rao, J. Mater. Chem., 2006, 16, 106 DOI: 10.1039/B511920K

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