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溶胶-凝胶法制备Ba0.50Sr0.50TiO3-MgTiO3复合薄膜的介电性能研究
发表时间：2009-11-30 浏览量：1803 下载量：570
| 全部作者： | 高丽娜，翟继卫，姚熹 |
| 作者单位： | 同济大学功能材料研究所 |
| 摘 要： | 以具有低介电常数、低损耗的介质材料MgTiO3(MT)为复合相，Ba0.50Sr0.50TiO3(BST)为主相，采用溶胶-凝胶法在Al2O3单晶衬底上制备了Ba0.50Sr0.50TiO3-MgTiO3（BST-MT）复合薄膜，研究了复合薄膜的相结构、显微结构以及在外加电场作用下的介电特性。结果表明：复合薄膜为BST和MT两相共存，MT的引入使得BST-MT复合薄膜同时具有低介电常数、低介电损耗和高材料优值，能很好地满足微波调谐器件用材料的参数要求。 |
| 关 键 词： | 材料物理与化学；复合薄膜；溶胶-凝胶；调谐率；介电性能 |
| Title： | Dielectric properties of Ba0.50Sr0.50TiO3-MgTiO3 composite thin films prepared by sol-gel method |
| Author： | GAO Lina, ZHAI Jiwei, YAO Xi |
| Organization： | Functional Materials Research Laboratory, Tongji University |
| Abstract： | In this work, MgTiO3 (MT) with low dielectric constant and low loss was used as compound phase and Ba0.50Sr0.50TiO3 as prrincipl phase for the fabrication of the Ba0.50Sr0.50TiO3-MgTiO3（BST-MT）composite thin films by sol-gel method. The dielectric properties of the composite thin films were characterized by measuring the dielectric constant and dielectric loss as functions of applied electric field and frequency. As a result, both MT and BST remained as two distinct individual entities in the composite thin films and a considerable reduction in the dielectric loss had been observed. The composite thin films with low dielectric constant and low dielectric loss could be attractive materials for tunable microwave device. |
| Key words： | materials physics and chemistry; composite thin films; sol-gel; tunability; dielectric properties |
| 发表期数： | 2009年11月第22期 |
| 引用格式： | 高丽娜，翟继卫，姚熹. 溶胶-凝胶法制备Ba0.50Sr0.50TiO3-MgTiO3复合薄膜的介电性能研究[J]. 中国科技论文在线精品论文，2009，2（22）：2353-2357. |
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