教師資料查詢 | 類別: 期刊論文 | 教師: 高惠春 KAO, HUEY-CHUEN (瀏覽個人網頁)

標題:Compact Li-doped Gd2Ti2O7 prepared with LiO0.5 self-flux
學年102
學期2
出版(發表)日期2014/02/13
作品名稱Compact Li-doped Gd2Ti2O7 prepared with LiO0.5 self-flux
作品名稱(其他語言)
著者L.C. Wen; H.Y. Hsieh; S.C. Chang; M.Y. Lin; Y.H. Lee; W.P. Su; H.-C.I. Kao*; H.S. Sheu; L.Y. Jang; M.C. Lee; Y.S. Lee
單位
出版者
著錄名稱、卷期、頁數Materials Research Bulletin 50(2), pp.297-302
摘要A series of (Gd2−xLix)Ti2O7−x with x = 0.040–0.110 was first reported. Parent compound with 2x moles of LiO0.5 self-flux was prepared at 1250 °C and abbreviated as GLT-2L. Relative density of all the samples is higher than 92%. By the addition of flux and Li ions substitution, preparation temperature is lowered for more than 300 °C. Comparing the unit cell a-axis, GLT with a formula as (Gd2−xLix)Ti2O7−x without flux addition has exactly the same as the GLT-2L with the same x. By the addition of flux, materials become more compact and grains grow bigger for the GLT-2L than the corresponding GLT samples. Electrical conductivity of a GLT-2L with x = 0.110 at 700 °C is 3 times larger than the measurements done by other research groups in the Gd2Ti2O7. In order to demonstrate the successful substitution of the Li ion into the Gd site, a series of GT samples was prepared with a formula of Gd2−xTi2O7−1.5x. With the same amount of x, every GLT samples have a longer unit cell a-axis than that of the GT. The difference is caused by the substitution of the Li ion into the Gd site. Valence of the Ti atoms of the GLT-2L samples is slightly less than 4 studied by the XANES spectroscopy.
關鍵字A. Oxides;C. Electron microscopy;C. XANES;C. X-ray diffraction;D. Electrical properties
語言英文
ISSN0025-5408;1873-4227
期刊性質國外
收錄於SCI;
產學合作國內;
通訊作者高惠春
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!