Magnetic Properties of Liquid-Phase Sintered CoFe2O4 for Application in Magnetoelastic and Magnetoelectric Transducers
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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| Data(s) |
07/11/2013
07/11/2013
2012
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| Resumo |
Cobalt ferrite is a ferrimagnetic magnetostrictive ceramic that has potential application in magnetoelastic and magnetoelectric transducers. In this work, CoFe2O4 was obtained using a conventional ceramic method and Bi2O3 was used as additive in order to obtain liquid-phase sintered samples. Bi2O3 was added to the ferrite in amounts ranging from 0.25 mol% to 0.45 mol% and samples were sintered at 900 degrees C and 950 degrees C. It was observed the presence of Bi-containing particles in the microstructure of the sintered samples and the magnetostriction results indicated microstructural anisotropy. It was verified that it is possible to get dense cobalt ferrites, liquid-phase sintered, with relative densities higher than 90% and with magnetostriction values very close to samples sintered without additives. FAPESP FAPESP [2009/09524-7, 2009/54001-2] CNPq CNPq |
| Identificador |
SENSORS, BASEL, v. 12, n. 8, supl. 1, Part 3, pp. 10086-10096, AUG, 2012 1424-8220 http://www.producao.usp.br/handle/BDPI/43173 10.3390/s120810086 |
| Idioma(s) |
eng |
| Publicador |
MDPI AG BASEL |
| Relação |
SENSORS |
| Direitos |
openAccess Copyright MDPI AG |
| Palavras-Chave | #MAGNETIC CERAMICS #FERRITES #MAGNETOSTRICTION #MAGNETOELASTIC SENSITIVITY #MAGNETOMECHANICAL SENSORS #CERAMICS PROCESSING #LIQUID-PHASE SINTERING #FIELD SENSORS #ZN FERRITES #MICROSTRUCTURE #CHEMISTRY, ANALYTICAL #ELECTROCHEMISTRY #INSTRUMENTS & INSTRUMENTATION |
| Tipo |
article original article publishedVersion |
