Effects of Particle Size on Electromagnetic and Microwave Absorption Properties of La0.7Sr0.3MnO3±[delta]-Epoxy Composite

La0.7Sr0.3MnO3±[delta] powders were fabricated by solid-state reaction method at 1473 K for 4 h. The precursors were prepared by ball-milling raw materials for 3, 6, 9, and 12 h, respectively. The crystal structures, particle size, and morphologies of precursors and prepared La0.7Sr0.3MnO3±[delta] w...

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Bibliographic Details
Published inInternational journal of applied ceramic technology Vol. 11; no. 4; p. 762
Main Authors Zhang, Shuyuan, Cao, Quanxi, Zhang, Maolin, Cai, Lei, Yan, Qidong
Format Journal Article
LanguageEnglish
Published Malden Wiley Subscription Services, Inc 01.07.2014
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Summary:La0.7Sr0.3MnO3±[delta] powders were fabricated by solid-state reaction method at 1473 K for 4 h. The precursors were prepared by ball-milling raw materials for 3, 6, 9, and 12 h, respectively. The crystal structures, particle size, and morphologies of precursors and prepared La0.7Sr0.3MnO3±[delta] were characterized by XRD, laser particle size analyzer and SEM, respectively. It is found that La0.7Sr0.3MnO3±[delta] possessed large particle size by ball-milling raw materials for a long time. Results indicated that La0.7Sr0.3MnO3±[delta], synthesized by ball-milling raw materials for 3 h, exhibited the optimal microwave absorption properties. The maximum reflection loss was -28.8 dB, and the -6 dB absorption bandwidth was 5.80 GHz. [PUBLICATION ABSTRACT]
ISSN:1546-542X
1744-7402
DOI:10.1111/ijac.12091