MAGNETIC AND ELECTRIC BEHAVIOUR OF SOME LEAD-BORATE GLASSES WITH MANGANESE IONS

Autor:	M. Flora, Viorica Simon, S. Filip, I. Ardelean, V. Ioncu
Rok vydání:	2001
Předmět:	Materials science Condensed matter physics chemistry.chemical_element Statistical and Nonlinear Physics Manganese Conductivity Condensed Matter Physics Thermal conduction Magnetic susceptibility Ion chemistry Superexchange Curie constant Boron
Zdroj:	International Journal of Modern Physics B. 15:2359-2368
ISSN:	1793-6578 0217-9792
DOI:	10.1142/s0217979201006653
Popis:	Magnetic susceptibility and electric resistivity measurements have been performed on x MnO ·(100-x)[2 B 2 O 3· PbO ] glasses with 030 mol% the manganese ions experience negative magnetic superexchange interactions. From Curie constant values we have established that in these glasses both Mn 2+ and Mn 3+ ions are present, which explains their magnetic and electric behaviour. The conductivity increases while the conductivity activation energy decreases with the MnO content. In order to analyse the conductivity data, we have considered in all glasses a polaronic model for conduction.
Databáze:	OpenAIRE
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