Thermal characterization of the intermediary products of the synthesis of Zn-substituted barium hexaferrite |
| |
Authors: | R da Costa Lima Magali Silveira Pinho and T Ogasawara |
| |
Institution: | (1) Brazilian Navy Research Institute (IPqM), Rua Ipiru no 2, Praia da Bica, Ilha do Governador, Rio de Janeiro, RJ, 21931-090, Brazil;(2) Department of Metallurgical and Materials Engineering, Federal University of Rio de Janeiro (COPPE/UFRJ), Rio de Janeiro, RJ, Brazil |
| |
Abstract: | The focus of this work is the use of thermal analyses and Fourier Transform Infrared Spectroscopy (FTIR) for characterization
of the gel decomposition, resulting from the formation of Y-barium hexaferrite substituted by Zn ions (Zn-Y-barium hexaferrite).
Samples with Ba2Zn2Fe12O22 composition were synthesized by the citrate auto-combustion method. During the TG experiments the highest mass loss was attributed
to citrate decomposition owing to the self-combustion reaction, confirmed by the disappearance of –OH band, and the drastic
decrease of –CO2
−and –NO3
− bands. Zn substitution resulted in an X-band microwave absorber material. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|