Cation distribution in nickel manganese oxide
Journal
Journal of Applied Physics
Journal Volume
111
Journal Issue
7
Date Issued
2012
Author(s)
Abstract
We use the technique of electron spin resonance (ESR) to analyze the distribution of cations in Mn 3-xNi xO 4with x = 0-1. ESR data suggest that Ni 2+ ions prefer to occupy octahedral-sites (B-sites) at low doping and concurrently produce a Mn 4+ ion in B-site. As Ni 2+ ions reach a critical value of 0.5, partial tetrahedral-sites are replaced by Mn 3+ ions and form inverse spinel. Continually adding the Ni content up to x ∼ 1 results into a full transformation of structure into inverse spinel, which is accompanied with a drop of ESR intensities. © 2012 American Institute of Physics.
SDGs
Type
journal article