相关实验视频

Updated: Jan 13, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

在50 nm以下的铁电AlScNN中,写出超过10的循环耐力

Hyunmin Cho¹, Yubo Wang¹, Chloe Leblanc¹

¹Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA.

Nature communications

|January 9, 2026

概括

甘化 (AlScN) 铁电器现在可以实现超过10^10的写入周期,这对于非挥发性内存应用来说是千倍的改进. 控制的部分极化开关提高了这些化铁电器的耐用性和能源效率.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
电气工程电气工程

背景情况:

像AlScN这样的氏体铁电材料为非易失性记忆提供高极化.
之前的AlScN设备由于强迫场的高,循环耐用性有限 (~10^7周期).

研究的目的:

在AlScN.中展示增强的极化开关控制.
为了实现基于AlScN的铁电器件的循环耐力显著提高.

主要方法:

在45纳米厚的Al0.64Sc0.36N电容器上使用精确的电压调制.
研究了完全极化和部分极化切换机制.
优化了设备尺寸 (10微米直径) 和故障字段.

主要成果:

实现了超过10^10周期的写入循环耐久性,这是千倍的改进.
完全偏振逆转持续了~10^8个周期;部分切换延长了耐久度超过10^10个周期.
保持了实质性的极化 (>30μC/cm^2) 与部分切换,并证明了接近10 MV/cm的崩场.

结论:

控制的部分偏振切换和尺寸缩放,为化铁电器带来了前所未有的可靠性.
这一突破使基于AlScN的非易失性内存能够具有很高的耐久性和节能运行.
建立了氏体铁电性能的新基准.

更多相关视频

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

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...