Correlation of microwave dielectric properties and normal vibration modes of xBa„Mg1Õ3Ta2Õ3…O3– „1Àx…Ba„Mg1Õ3Nb2Õ3…O3 ceramics: I. Raman spectroscopy
學年 92
學期 1
出版（發表）日期 2003-09-01
作品名稱 Correlation of microwave dielectric properties and normal vibration modes of xBa„Mg1Õ3Ta2Õ3…O3– „1Àx…Ba„Mg1Õ3Nb2Õ3…O3 ceramics: I. Raman spectroscopy
作品名稱（其他語言）
著者 Chia, C. T.; Chen, Y. C.; Cheng, H. F.; 林諭男; Lin, I. N.
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數 Journal of Applied Physics 94(5), pp.3360-3364
摘要 Micro-Raman measurements of xBa~Mg1/3Ta2/3)O3–(12x)Ba~Mg1/3Nb2/3)O3 perovskite ceramics, with x50, 0.25, 0.50, 0.75, and 1.0, were taken at room temperature. Raman results clearly show the 1:2 ordered structures of these compounds. Four A1g and five Eg Raman modes were unambiguously assigned. The A1g(O) phonon of the oxygen-octahedron stretch mode, which possesses the largest energy and width of all the observed Raman phonons, significantly influences the microwave dielectric properties of the materials. A higher vibration frequency of A1g(O) mode results in a lower dielectric constant, and a wider width of the mode corresponds to a lower Q3f value.
關鍵字
語言 en
ISSN 0021-8979
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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