OPTIMIZATION OF ELECTROMAGNETIC MATCHING OF CARBONYL IRON / LA0.8SR0.2MNO3 COMPOSITES FOR MICROWAVE ABSORPTION

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MOTMAEN D.; KIYANVASH A.

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Journal: CERAMIC SCIENCE & ENGINEERING Year:2016 | Volume:5 | Issue:1 Page(s): 15-22

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Title

OPTIMIZATION OF ELECTROMAGNETIC MATCHING OF CARBONYL IRON / LA0.8SR0.2MNO3 COMPOSITES FOR MICROWAVE ABSORPTION

Author(s)

MOTMAEN D. | KIYANVASH A. | Issue Writer Certificate

Keywords

CARBONYL IRONQ2

LSMOQ2

SOLQ2

GELQ2

MICROWAVE ABSORPTION PROPERTIESQ2

COMPOSITE PAINTSQ2

Abstract

In the present research the nano- sized La0.8Sr0.2MnO3 (LSMO) powder was synthesized using a simple SOL-gel method. Microwave absorbing materials consisting of 80wt% CARBONYL IRON (CI) particles and LSMO with different proportions of CI: LSMO being 80: 0, 79: 1, 77: 3, 74: 6, and 72: 8, respectively, and 20wt% molten wax are investigated in the frequency range of 8-12 GHz. The composite materials in the form of paints were applied on an aluminum substrate (22.8×10.1×0.8 mm3) with the thicknesses of 0.7, 0.9 and 1.1 mm, respectively. Phase analyses and crystallite size of the LSMO powder, morphology of particles, and the electro–magnetic (EM) absorption properties (8-12 GHz) of the paints were determined using X-ray diffraction analysis (XRD), field emission scanning electron microscopy (FE-SEM), and vector network analysis (VNA), respectively.The composite with a CI/LSMO ratio of 74: 6 showed an optimal reflection loss of–10.89 dB at 11.55 GHz with a matching thickness of 0.9 mm. By increasing the thickness of coating from 0.7 to 1.1 mm, the average absorption properties were increased. Therefore, CIP/LSMO composites were characterized as super-thin electromagnetic absorbers with a wider absorption bandwidth in GHz frequency bands.

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APA: Copy

MOTMAEN, D., & KIYANVASH, A.. (2016). OPTIMIZATION OF ELECTROMAGNETIC MATCHING OF CARBONYL IRON / LA0.8SR0.2MNO3 COMPOSITES FOR MICROWAVE ABSORPTION. CERAMIC SCIENCE & ENGINEERING, 5(1), 15-22. SID. https://sid.ir/paper/227929/en

Vancouver: Copy

MOTMAEN D., KIYANVASH A.. OPTIMIZATION OF ELECTROMAGNETIC MATCHING OF CARBONYL IRON / LA0.8SR0.2MNO3 COMPOSITES FOR MICROWAVE ABSORPTION. CERAMIC SCIENCE & ENGINEERING[Internet]. 2016;5(1):15-22. Available from: https://sid.ir/paper/227929/en

IEEE: Copy

D. MOTMAEN, and A. KIYANVASH, “OPTIMIZATION OF ELECTROMAGNETIC MATCHING OF CARBONYL IRON / LA0.8SR0.2MNO3 COMPOSITES FOR MICROWAVE ABSORPTION,” CERAMIC SCIENCE & ENGINEERING, vol. 5, no. 1, pp. 15–22, 2016, [Online]. Available: https://sid.ir/paper/227929/en

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