内部接口层对化Ba的介电性质的影响
1School of Electronic Information Engineering, Department of Electronic and Communication Engineering, Shanghai DianJi University, Shanghai 201306, People's Republic of China.
将内部接口层引入合的Ba0.6Sr0.4TiO3 (BST) 薄膜中,显著改善了介电特性和减少了泄漏电流. 八层接口 (I8) 膜在可调节过器应用中表现出卓越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 薄膜技术 薄膜技术
背景情况:
- 铁电薄膜,如Ba0.6Sr0.4TiO3 (BST),对于电子设备至关重要.
- 多层薄膜中的界面效应可以显著改变材料特性.
- 优化介电性质和减少泄漏电流是BST薄膜应用中的关键挑战.
研究的目的:
- 研究内部接口层对化BST薄膜的介电性质的影响.
- 分析多层BST薄膜的结构,形态,介电和泄漏电流特性.
- 为了评估这些修改后的BST片在可调节过器应用中的性能.
主要方法:
- 使用sol-gel方法制备合的Ba0.6Sr0.4TiO3 (ZBST和MBST) 土壤.
- 制造具有不同数量的内部接口层 (I2,I4,I8) 的多层BST薄膜.
- 膜结构,形态,介电性质和在应用直流偏差下泄漏电流的表征.
主要成果:
- 所有薄膜都呈现出一个立方矿BST相,具有主导的 (110) 衍射峰值.
- 观察到表面构成均,没有破裂层.
- 八层接口 (I8) 膜显示了高质量因子 (10 MHz 111.3,100 kHz 108.6) 和最小的泄漏电流密度.
- 使用I8薄膜调节的带通波器显示了5.7%的中央频率调节率.
结论:
- 引入内部接口层有效地改变了化BST薄膜的介电性质和泄漏行为.
- I8薄膜具有出色的介电性能和低泄漏电流,使其适用于先进的电子应用.
- 开发的多层BST片显示出可用于调节微波波器的前景.
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