教師資料查詢 | 類別: 期刊論文 | 教師: 林諭男 I-nan Lin (瀏覽個人網頁)

標題:Correlation of microwave dielectric properties and crystallinity for pulsed laser deposited Bi2(Zn1/3Nb2/3)2O7 thin films
學年92
學期1
出版(發表)日期2004/01/01
作品名稱Correlation of microwave dielectric properties and crystallinity for pulsed laser deposited Bi2(Zn1/3Nb2/3)2O7 thin films
作品名稱(其他語言)
著者Cheng, Hsiu-fung; Chen, Yi-chun; Liu, Hsiang-lin; Hwa, Luu-gen; 林諭男; Lin, I-nan
單位淡江大學物理學系
出版者Elsevier
著錄名稱、卷期、頁數Journal of the European Ceramic Society 24(6), pp.1791-1794
摘要Correlation of microwave dielectric properties of Bi2(Zn1/3Nb2/3)2O7, BiZN thin films, which were pulsed laser deposited on Si(100) substrates, with crystallinity of BiZN phase was examined using Fourier Transform Infrared (FTIR) spectroscopy. Rigid-ion model analysis from FTIR spectra of the films reveals that the magnitude of effective charge for oxygen increases with improved crystallinity for BiZN films. In contrast, lattice vibrational modes of the films, which occur at ω01=341 cm−1, ω02=522 cm−1, and ω03=612 cm−1, insignificantly change with films' crystallinity. It implies that better crystallinity will induce higher polarization in BO6 oxygen octahedral, which improves microwave properties of pyrochlore materials. The dielectric constant measured at 200 cm−1 increases with substrate temperature used for depositing BiZN films, inferring that dielectric properties in low frequency regime of far infrared region are predominantly contributed by ionic polarization, and are strongly related to effective charges of oxygen species.
關鍵字Dielectric properties; Effective charge; FTIR; Microwave dielectric thin films; Pulsed laser deposition
語言英文
ISSN0955-2219
期刊性質國內
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產學合作
通訊作者
審稿制度
國別中華民國
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出版型式,電子版
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