Microstructure and Microwave Dielectric Properties of ($1-x$)Ba(Co1/3Nb2/3)O3–$x$Ba(Zn1/3Nb2/3)O3 Ceramics

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著者

    • Ahn Cheol-Woo Ahn Cheol-Woo
    • Department of Materials Science and Engineering, Korea University, 1-5 Ka, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea
    • Nahm Sahn Nahm Sahn
    • Department of Materials Science and Engineering, Korea University, 1-5 Ka, Anam-dong, Sungbuk-ku, Seoul 136-701, Korea
    • Park Hyun-Min
    • New Materials Evaluation Center, Korea Research Institute of Standards and Science, Taeduk Science Town, Taejon 305-600, Korea
    • Lee Hwack-Joo
    • New Materials Evaluation Center, Korea Research Institute of Standards and Science, Taeduk Science Town, Taejon 305-600, Korea

抄録

The microstructure and microwave dielectric properties of ($1-x$)Ba(Co1/3Nb2/3)O3–$x$Ba(Zn1/3Nb2/3)O3 [($1-x$)BCN–$x$BZN] ceramics with $0.0\leq x\leq 1.0$ were investigated. When the sintering temperature was 1400°C, a homogeneous phase with a $1:2$ ordered structure was found in the specimens with $x\leq 0.3$ but for the specimens with $x\geq 0.6$, a disordered structure and BaNb6O16 second phase were found. The grain growth related to the BaNb6O16 second phase occurred in the specimens with $x\geq 0.5$. The temperature coefficient of the resonant frequency ($\tau_{\text{f}}$) increased with increasing $x$, and the specimens with $0.3\leq x\leq 0.4$ have zero $\tau_{\text{f}}$. Dielectric constant ($\varepsilon_{\text{r}}$) increased with the increase in $x$ and was about 34.5 when $x=0.3$. For the specimens with $x\leq 0.3$, the $Q\times f$ value was high but decreased as $x$ exceeded 0.3. The maximum $Q\times f$ value, 97,000 GHz, was obtained for 0.7BCN–0.3BZN ceramics sintered at 1400°C for 20 h.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 42(11), 6964-6968, 2003-11-15

    公益社団法人 応用物理学会

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各種コード

  • NII論文ID(NAID)
    10012564326
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    6752745
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  J-STAGE  JSAP 
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