长轴应变增强铁电极化向一个巨大的道电阻
Xiaoqi Li1,2, Jiaqi Liu1,2, Jianqi Huang1
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
研究人员使用Sr3Al2O6缓冲层在BaTiO3/La0.67Sr0.33MnO3异构中增强了铁电极化. 这大大提高了铁电道连接处的道电阻,用于高级内存应用.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 铁电极化对于非易失性存储器件至关重要.
- BaTiO3/La0.67Sr0.33MnO3 (BTO/LSMO) 异构结构具有较高的基里温度和自旋两极化.
- 在BTO/LSMO中,中度铁电极化受到应变松的限制.
研究的目的:
- 在BTO/LSMO异构结构中增强BTO薄膜的铁电特性.
- 为了研究Sr3Al2O6 (SAO) 缓冲层对界面应变松的影响.
- 提高铁电道交叉点 (FTJ) 的性能.
主要方法:
- 使用Sr3Al2O6 (SAO) 缓冲层来缓解应变放松.
- 研究了极化对表轴应变的线性依赖.
- 制造的SAO缓冲Pt/BTO/LSMO铁电道交叉点 (FTJ) 铁电道交叉点.
主要成果:
- 实现了可调整的应变和大应变敏感系数,每百分比应变为~27μC/cm2.
- 在BTO/LSMO接口获得了~80μC/cm2的巨型铁电极化.
- 在制造的FTJ中展示了大约10^5的巨型道电阻 (TER).
结论:
- 该SAO缓冲层有效地减轻了界面应变放松,增强了铁电极化.
- 应变,极化大小和FTJ设备性能 (开/关比) 之间存在很强的相关性.
- 这种方法提升了FTJ在下一代信息存储应用中的潜力.
更多相关视频
08:00Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
相关概念视频
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Transformation of Plane Strain
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
Strain Energy
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
Elastic Strain Energy for Shearing Stresses
