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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Rapid calcination of ferrite Ni0.75Zn0.25Fe2O4 by microwave energy

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Author(s):
Assis, R. B. [1] ; Bomio, M. R. D. [1] ; Nascimento, R. M. [1] ; Paskocimas, C. A. [1] ; Longo, E. [2] ; Motta, F. V. [1]
Total Authors: 6
Affiliation:
[1] Univ Fed Rio Grande do Norte, DEMAT, CT, Lab Chem Synth Mat, BR-59072970 Natal, RN - Brazil
[2] UNESP, LIEC, IQ, BR-14801907 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 118, n. 1, p. 277-285, OCT 2014.
Web of Science Citations: 3
Abstract

Ferrites Ni0.75Zn0.25Fe2O4 were obtained by polymeric precursor method and calcined in a short time with microwave energy to assess the morphological and microstructural characteristics. Samples were calcined at 500, 650, 800, and 950 A degrees C for 30 min in a microwave oven. The resulting powders were characterized by thermal analysis (TG/DSC), X-ray diffraction (XRD), Fourier transform infrared spectrometer, field-emission gun scanning electron microscope (FEG-SEM), and energy-dispersive X-ray spectroscopy. The XRD results showed the formation of single ferrite phase at temperature of 500 A degrees C for 30 min. The FEG-SEM analysis showed agglomerated particles with formation of non-dense longitudinal plates, with interparticle porosity and agglomerated fine particles. The rapid calcination by microwave energy demonstrated satisfactory results in relatively low temperature of 500 A degrees C for 30 min and appeared to be a promising technique for obtaining nickel-zinc ferrite powders. (AU)

FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC