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 language | English |
|---|---|
| Article number | 09A502 |
| Journal | Journal of Applied Physics |
| Volume | 107 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - May 1 2010 |
| Externally published | Yes |
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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 journal › Article
}
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.
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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 -