Investigation on electromagnetic and microwave absorbing properties of La0.7 Sr0.3 MnO3-δ /carbon nanotube composites

C. Y. Tsay, R. B. Yang, D. S. Hung, Y. H. Hung, Y. D. Yao, C. K. Lin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In this study, the influence of the addition of carbon nanotube (CNT) (0, 0.5, 1.0, and 2.0 wt %) on complex permittivity, complex permeability, and reflection loss for La0.7 Sr0.3 MnO3-δ (LSMO)/polymer composites was investigated. Microwave absorbing composites were prepared by molding and curing a mixture of LSMO powders, CNTs, and epoxy resin. The complex permittivity and complex permeability for LSMO/CNT composites were examined by a cavity perturbation technique. The experimental results showed that the complex permittivity increased with increasing CNT addition and the imaginary part of the permeability decreased with rising frequency. In the present study, a microwave absorbing composite filled with 80 wt % LSOM powders and 2 wt % CNTs exhibited the optimum performance, that is, the microwave absorbing peak was -22.85 dB at 9.5 GHz and the -10 dB absorbing bandwidth reached 3.3 GHz for the sample with a matching thickness of 3 mm.

Original languageEnglish
Article number09A502
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
Publication statusPublished - May 1 2010
Externally publishedYes

Fingerprint

carbon nanotubes
electromagnetism
microwaves
composite materials
permeability
permittivity
resins
epoxy resins
curing
bandwidth
perturbation
cavities
polymers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Investigation on electromagnetic and microwave absorbing properties of La0.7 Sr0.3 MnO3-δ /carbon nanotube composites. / Tsay, C. Y.; Yang, R. B.; Hung, D. S.; Hung, Y. H.; Yao, Y. D.; Lin, C. K.

In: Journal of Applied Physics, Vol. 107, No. 9, 09A502, 01.05.2010.

Research output: Contribution to journalArticle

@article{15006e85bb4f4467ac25c0c114939bfd,
title = "Investigation on electromagnetic and microwave absorbing properties of La0.7 Sr0.3 MnO3-δ /carbon nanotube composites",
abstract = "In this study, the influence of the addition of carbon nanotube (CNT) (0, 0.5, 1.0, and 2.0 wt {\%}) on complex permittivity, complex permeability, and reflection loss for La0.7 Sr0.3 MnO3-δ (LSMO)/polymer composites was investigated. Microwave absorbing composites were prepared by molding and curing a mixture of LSMO powders, CNTs, and epoxy resin. The complex permittivity and complex permeability for LSMO/CNT composites were examined by a cavity perturbation technique. The experimental results showed that the complex permittivity increased with increasing CNT addition and the imaginary part of the permeability decreased with rising frequency. In the present study, a microwave absorbing composite filled with 80 wt {\%} LSOM powders and 2 wt {\%} CNTs exhibited the optimum performance, that is, the microwave absorbing peak was -22.85 dB at 9.5 GHz and the -10 dB absorbing bandwidth reached 3.3 GHz for the sample with a matching thickness of 3 mm.",
author = "Tsay, {C. Y.} and Yang, {R. B.} and Hung, {D. S.} and Hung, {Y. H.} and Yao, {Y. D.} and Lin, {C. K.}",
year = "2010",
month = "5",
day = "1",
doi = "10.1063/1.3337681",
language = "English",
volume = "107",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Investigation on electromagnetic and microwave absorbing properties of La0.7 Sr0.3 MnO3-δ /carbon nanotube composites

AU - Tsay, C. Y.

AU - Yang, R. B.

AU - Hung, D. S.

AU - Hung, Y. H.

AU - Yao, Y. D.

AU - Lin, C. K.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - In this study, the influence of the addition of carbon nanotube (CNT) (0, 0.5, 1.0, and 2.0 wt %) on complex permittivity, complex permeability, and reflection loss for La0.7 Sr0.3 MnO3-δ (LSMO)/polymer composites was investigated. Microwave absorbing composites were prepared by molding and curing a mixture of LSMO powders, CNTs, and epoxy resin. The complex permittivity and complex permeability for LSMO/CNT composites were examined by a cavity perturbation technique. The experimental results showed that the complex permittivity increased with increasing CNT addition and the imaginary part of the permeability decreased with rising frequency. In the present study, a microwave absorbing composite filled with 80 wt % LSOM powders and 2 wt % CNTs exhibited the optimum performance, that is, the microwave absorbing peak was -22.85 dB at 9.5 GHz and the -10 dB absorbing bandwidth reached 3.3 GHz for the sample with a matching thickness of 3 mm.

AB - In this study, the influence of the addition of carbon nanotube (CNT) (0, 0.5, 1.0, and 2.0 wt %) on complex permittivity, complex permeability, and reflection loss for La0.7 Sr0.3 MnO3-δ (LSMO)/polymer composites was investigated. Microwave absorbing composites were prepared by molding and curing a mixture of LSMO powders, CNTs, and epoxy resin. The complex permittivity and complex permeability for LSMO/CNT composites were examined by a cavity perturbation technique. The experimental results showed that the complex permittivity increased with increasing CNT addition and the imaginary part of the permeability decreased with rising frequency. In the present study, a microwave absorbing composite filled with 80 wt % LSOM powders and 2 wt % CNTs exhibited the optimum performance, that is, the microwave absorbing peak was -22.85 dB at 9.5 GHz and the -10 dB absorbing bandwidth reached 3.3 GHz for the sample with a matching thickness of 3 mm.

UR - http://www.scopus.com/inward/record.url?scp=77951673783&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77951673783&partnerID=8YFLogxK

U2 - 10.1063/1.3337681

DO - 10.1063/1.3337681

M3 - Article

VL - 107

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 9

M1 - 09A502

ER -