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    題名: Microwave sintering of (Bi0.75Ca1.2Y1.05)(V0.6Fe4.4)O12 microwave magnetic materials
    作者: Tsay, Chien-yih;Liu, Kuo-shung;林諭男;Lin, I-nan
    貢獻者: 淡江大學物理學系
    關鍵詞: Bi-CVG;Microwave sintering;Microwave magnetic materials
    日期: 2004
    上傳時間: 2009-12-31 10:34:31 (UTC+8)
    出版者: Elsevier
    摘要: Microwave sintering (ms) process is applied to efficiently densify the (Bi0.75Ca1.2Y1.05)(V0.6Fe4.4)O12, Bi-CVG, materials, without inducing a deleterious effect on their microwave magnetic properties. A microwave sintering process can sinter the Bi-CVG materials to a density as high as 96.5%T. D., by firing the samples at 1030 °C (30 min). In contrast, it needs 1060 °C (6 h) to densify the materials to the same high density by a conventional sintering (cs) process. The ms-processed Bi-CVG materials possess pronouncedly smaller grain size (∼1.2 μm), which markedly hinders their low frequency magnetization process (in a few tens of MHz frequency regime), resulting in larger coercive field (Hc) and smaller initial permeability (μi), as compared with the cs-processed large grain samples. But such a small grain characteristic insignificantly degrades the microwave magnetic properties, the resonance line width (ΔH), of the Bi-CVG materials.
    關聯: Journal of the European Ceramic Society 24(6), pp.1057-1061
    DOI: 10.1016/S0955-2219(03)00401-1
    顯示於類別:[物理學系暨研究所] 期刊論文

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