相关实验视频

Updated: Mar 15, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

在有纹理的Aurivillius氧化物基薄膜中模板垂直铁电

Song Zhou^1,2,3, Shulin Zhong⁴, Songge Zhang^3,5

¹Tsientang Institute for Advanced Study, Hangzhou 310024, Zhejiang, China.

Nature communications

|March 14, 2026

概括

研究人员开发了一种新方法,用于制造具有可调节偏振的铁电材料. 这种结构模板策略在Bi2WO6中稳定了超稳定的WO3相,使先进电子设备的强大的外平面偏振成为可能.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
纳米技术纳米技术

背景情况:

铁电材料对于电子设备至关重要.
在铁电中控制极化方向是关键的研究挑战.
奥里维利乌斯相氧化物是一种具有分层结构的铁电材料.

研究的目的:

开发一种结构模板策略,将奥里维利乌斯相氧化物重新配置为变态稳定的铁电相.
为了在铁电膜中实现定制的极化.
扩大铁电氧化物家族,克服极化-定向性约束.

主要方法:

使用Bi2WO6框架的结构模板策略.
稳定一个转移稳定的WO3阶段.
第一原则计算和原子分辨率扫描传输电子显微镜.
制造原型铁电场效应晶体管和记忆管.

主要成果:

在有纹理的WO3/Bi2WO6膜中实现了强大的外平面极化 (10μC/cm2).
确定了一个WO3阶段与氧气排位驱动的铁电.
在原型设备中证明了强大的开关比率 (>106) 和高达350°C的热稳定性.

结论:

结构模板策略成功地创建了具有量身定制的偏振的元稳定铁电相.
这种方法扩大了二元铁电氧化物家族.
建立了一个可概括的范式,用于克服分极化-定向性约束在分层铁电.

更多相关视频

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

相关概念视频

Ferromagnetism

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...