MAGNETIC AND ELECTRIC BEHAVIOR OF IRON IONS IN THE 3B2O3·CAO GLASS MATRIX

Autor:	V. Ioncu, P. Păşcuţă, I. Ardelean
Rok vydání:	2001
Předmět:	Materials science Nuclear magnetic resonance Electrical resistivity and conductivity Superexchange Analytical chemistry Statistical and Nonlinear Physics Curie constant Condensed Matter Physics Thermal conduction Glass matrix Magnetic susceptibility Electric resistivity Ion
Zdroj:	Modern Physics Letters B. 15:1445-1453
ISSN:	1793-6640 0217-9849
DOI:	10.1142/s0217984901003378
Popis:	Magnetic susceptibility and electric resistivity measurements have been performed on x Fe 2 O 3 · (100-x)[3 B 2 O 3· CaO ] glasses with 0 5 mol% the iron ions participate in the negative superexchange interaction. From Curie constant values we have established that in these glasses both Fe 2+ and Fe 3+ ions are present, which explains their magnetic and electric behavior. The electrical resistivity and the conductivity activation energy decreases with the Fe 2 O 3 content. In order to analyze the electrical data, we have considered, in these glasses, a polaronic model for conduction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13fd76d110d8febe31e7a474aa11af6b https://doi.org/10.1142/s0217984901003378 Zobrazit plný text záznamu