用电子全息技术测量了掺铌∑13[001]钛酸锶倾转双晶界面的电势场分布.结果显示掺杂前界面处的Schottky势垒已消失.表明铌原子占据了界面处氧离子空位,消除了电荷聚集在界面处的分布状态.有选择性地掺杂金属元素可以补偿晶界面固有的内禀缺陷,达到调制导电陶瓷材料电学性能的目的.
参考文献
| [1] | Mykura H.Grain boundary structure and kinetics[M].Metals Park:Amer Soc Metals,1980 |
| [2] | Balachandran U .Eror N G[J].Journal of the Electrochemical Society,1982,129:1021. |
| [3] | Chiang Y M;Takagi T .[J].Journal of the American Ceramic Society,1990,73:3278. |
| [4] | Chiang Y M;Takagi T .[J].Journal of the American Ceramic Society,1990,73:3286. |
| [5] | Johnson K D;Dravid V P .[J].Applied Physics Letters,1999,74:621. |
| [6] | Ravikumar V.;Dravid VP.;Rodrigues RP. .AN INVESTIGATION OF ACCEPTOR-DOPED GRAIN BOUNDARIES IN SRTIO3[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,1996(7):1799-1806. |
| [7] | 王岩国,张泽,阎光辉.利用电子全息术测量掺锰钛酸锶双晶界面的势场分布[J].电子显微学报,2001(02):121-126. |
| [8] | Eigler D M;Lutz C P .[J].Nature,1991,352:600. |
| [9] | Wang Y G;De Hosson J Th M .[J].Journal of Materials Science Letters,2001,20:389. |
| [10] | Gabor D .[J].NATURE,1948,161:777. |
| [11] | Tonomura A .[J].Reviews of Modern Physics,1987,59:639. |
| [12] | Lichte H .[J].Ultramicroscopy,1993,51:15. |
| [13] | Landau L D;Lifssitz E M.Quantum mechanics[M].London:Pergamon Press,1965:152. |
| [14] | Wilcox N.;Rodrigues RP.;Dravid VP.;Vollmann M.;Waser R. Soni KK.;Adriaens AG.;Ravikumar V. .INVESTIGATION OF GRAIN BOUNDARY SEGREGATION IN ACCEPTOR AND DONOR DOPED STRONTIUM TITANATE[J].Solid state ionics,1995(0):127-136. |
| [15] | Browning N D;Buban J P;Moltaji H O;Pennycock S J,Duscher G,Johnson K D,Rodrigues R P,Dravid V P .[J].Applied Physics Letters,1999,74:2638. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%