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    題名: Effect of SnO2 addition on the dielectric properties of Ba2Ti9O20 ceramics in the high frequency regime
    作者: Liu, Hsiang-Lin;Chen, Hsin-I;Tzeng, Yuan-Tai;Chia, Chia-Ta;Hsu, Kuo-Chien;Chi, Chen-Chung;Chang, Chi-Ben;Leou, Keh-Chyang;Lin, I-Nan
    貢獻者: 淡江大學物理學系
    日期: 2006-11
    上傳時間: 2011-10-24 10:36:42 (UTC+8)
    出版者: College Park: American Institute of Physics
    摘要: The effect of SnO2 addition on the high-frequency dielectric properties of Ba2Ti9O20 ceramics has been investigated using terahertz time-domain spectroscopy, far-infrared (FIR) reflectivity, and Raman-scattering measurements. The dielectric constants determined from the terahertz and FIR spectra are smaller than that taken in the microwave frequency region. In contrast, the increase of the dielectric loss with increasing frequency is due to some resonance modes above 1 THz. Importantly, our data clearly show that the SnO2 (2.4 mole %) addition degraded the dielectric properties of Ba2Ti9O20 ceramics, which is ascribed to the deterioration on the coherency of lattice vibrational characteristics for these materials.
    關聯: Journal of Applied Physics 100(9), 094104(5pages)
    DOI: 10.1063/1.2363605
    顯示於類別:[物理學系暨研究所] 期刊論文


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