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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제22권 제2호
- 발행연도
- 2021.1
- 수록면
- 208 - 213 (6page)
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In this research, La2Ti2O7 doped with erbium-ytterbium was produced by using solid state technique. A series of compoundswith the chemical equation (La1?x?yREx?y)2Ti2O7 were doped with (Er3+, x = 0.025, 0.050 ) and (Yb3+ y = 0.02 ) rare earth ionsprepared by conventional solid state reaction method at 1350 oC for 24 h. X-ray diffraction (XRD), scanning electronmicroscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were carried out for the structural analysis, which showedthat second phase did not form in (La1?x?yREx?y)2Ti2O7. Additionally, the polyaniline- erbium, ytterbium doped La2Ti2O7composites were fabricated via hot pressing using the compositions of (La0.955Yb0.02Er0.025)2Ti2O7, (La0.93Yb0.02Er0.05)2Ti2O7 andaniline. The weight ratios of erbium-ytterbium doped lanthanum titanate and aniline were 1:1 and 1:3 respectively, and epoxyresin was utilized to develop microwave shielding effectiveness composites. The microwave shielding effectiveness performancesof polyaniline- La2Ti2O7: erbium-ytterbium composites were examined by shielding effect in 0-8 GHz using two-port vectornetwork analyzer. A minimum of - 34.37 dB shielding effect performance was obtained in 6.27 GHz at the thickness of 2.0 mm. This shielding effect performance can be adjusted easily by managing the content of polyaniline in the composites for theneeded frequency bands.
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