• Reduction mechanism of Ni2+ into Ni nanoparticles prepared from different precursors: Magnetic studies

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/072/03/0577-0586

• # Keywords

Ni nanoparticles; ethylene glycol; cyclic voltmetery; reducing agent; complex.

• # Abstract

The reduction mechanism of Ni2+ into Ni particles using different precursors such as NiCl2 solution, NiO powder and Ni[(NH3)6]Cl2 complex has been established. Different particle sizes can be designed from these precursors. The smallest crystallite size (12 nm) can be obtained from Ni[(NH3)6]Cl2 complex in the presence of the stabilizing ligand (oleic acid). The field-cooled (FC) and zero-field-cooled (ZFC) magnetization of Ni particles obtained from Ni[(NH3)6]Cl2 complex in the temperature range 5–300 K established the ferromagnetic interaction up to 300 K. The magnetization values at three different temperatures 5, 70 and 300 K are 50.2, 49.5 and 45.5 Oe respectively at $3 \times 10^{4}$ Oe applied field and such values are less than that of the bulk value. The Curie temperature $(T_{c})$ decreases slightly with the decrease of particle size. This study will provide guidance in the preparation of metal nanoparticles from different precursors.

• # Author Affiliations

1. Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
2. Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India

• # Pramana – Journal of Physics

Volume 96, 2022
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019