Ananth, M.V. and Venkatesan, V. and Dakshinamurthi, K. (1998) Magnetization studies of chemically prepared manganese dioxides. Journal of Power Sources, 72 (01). 099-102. ISSN 0378-7753

PDF Restricted to Registered users only Download (2825Kb) | Request a copy

Abstract

A study is made of the magnetization properties of commercial, chemically prepared, manganese dioxides which are intended for use in dry cells, zinc alkaline cells and magnesium cells. The technique employs a vibrating sample magnetometer and the properties are measured as a function of applied fields at room temperature. A correlation is found between the shift of the (411) XRD peak and the magnetization behaviour. The results indicate that the magnetizability that is observed in these mostly α-phase containing samples can be accounted for by the average Mn-Mn distance and the consequent interactions between manganese spins mediated by O2- and OH-. Of particular interest to magnetic moments of MnO2 samples with traces of δ phases is the prediction that the extent of the modification of the birnessite phase has a significant influence

Item Type:	Article
Uncontrolled Keywords:	Manganese dioxide; Magnetization; Crystal structure; Mn-Mn couplings; Phase composition; Battery
Subjects:	Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	04 May 2012 10:01
Last Modified:	04 May 2012 10:01
URI:	http://cecri.csircentral.net/id/eprint/2520

Actions (login required)

View Item