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MgCu NANOCRYSTALLINE CERAMIC WITH La3+ AND Y3+ IONIC SUBSTITUTIONS USED AS HUMIDITY SENSOR

N. Rezlescu1,* , E. Rezlescu1, F. Tudorache1, P. D. Popa1

Affiliation

  1. National Institute of Research and Development for Technical Physics B-dul D. Mangeron 47, 700050 Iasi 3, Romania

Abstract

The partial substitution of La and Y for Fe into nanocrystalline Mg0.5Cu0.5Fe2O4 compound was studied. The Mg-based ceramics present an attractive set of properties: high electrical resistivity, high Curie temperature and chemical stability. Y3+ and La3+ ions affect the structure and magnetic and electric properties of Mg0.5Cu0.5Fe2O4 compound. These ions increase the grain size and favour the densification of ceramic. The electrical resistivity decreases with incorporation of La3+ and Y3+ ions in Mg0.5Cu0.5Fe2O4..

Keywords

Ferrites, Humidity sensor, Nanocrystalline materials.

Submitted at: April 26, 2004
Accepted at: June 10, 2004

Citation

N. Rezlescu, E. Rezlescu, F. Tudorache, P. D. Popa, MgCu NANOCRYSTALLINE CERAMIC WITH La3+ AND Y3+ IONIC SUBSTITUTIONS USED AS HUMIDITY SENSOR, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 2, pp. 695-698 (2004)