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Effect of Ca and Ag doping on the functional properties of BiFeO3 nanocrystalline powders and films

Published online by Cambridge University Press:  04 August 2014

Gina Montes Albino
Affiliation:
Department of Mechanical Engineering, University of Puerto Rico at Mayagüez P.O. Box 9045, Mayagüez, PR, 00681-9045 USA.
Oscar Perales-Pérez
Affiliation:
Department of Engineering Science and Materials, University of Puerto Rico at Mayagüez, Mayagüez, PR, 00680-9044, USA.
Boris Renteria-Beleño
Affiliation:
Department of Engineering Science and Materials, University of Puerto Rico at Mayagüez, Mayagüez, PR, 00680-9044, USA.
Yarilyn Cedeño-Mattei
Affiliation:
Department of Engineering Science and Materials, University of Puerto Rico at Mayagüez, Mayagüez, PR, 00680-9044, USA.
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Abstract

The present work addresses the systematic evaluation of the influence of the incorporation of dopant species (Ca+2, Ag+1) on the structural and functional properties of bismuth ferrite (BFO) nanocrystalline powders and films. Pure and doped BFO powders and thin films were synthesized by a modified sol-gel method. The concentration of the doping species varied from 0 up to 7 at %. The development of the host BFO structure was confirmed by XRD analyses of samples annealed at 700°C for one hour in air and nitrogen atmosphere. Thicknesses of films varied between 80 and 200 nm, depending on the concentration of Ca+2 species. Doped BFO exhibited a magnetic behavior that turned from paramagnetic into ferrimagnetic with the increase of Ca+2 concentrations.

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Copyright © Materials Research Society 2014 

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Effect of Ca and Ag doping on the functional properties of BiFeO3 nanocrystalline powders and films
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