相关实验视频

Updated: Apr 12, 2026

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Published on: October 27, 2018

在高压下合成和超导体A15-(Lu,Y) ₄H₂₃

Kexin Zhang¹, Jingkun Yu², Yuchen Zhang¹

¹State Key Laboratory of High Pressure and Superhard Materials, College of Physics, Jilin University, Changchun 130012, China.

Journal of the American Chemical Society

|March 31, 2025

概括

研究人员合成了一种新的三元化物, (Lu,Y) 4H23,达到112K的超导过渡温度 (T<0xE1><0xB5><0xA_>).这一发现提供了提高化物超导性能的新策略.

科学领域:

材料科学
凝聚物质物理学
超导性

背景情况:

三级化物是提高超导过渡温度 (T<0xE1><0xB5><0xA_>) 和降低稳定压力的关键.
卢-H系统提供低稳定压力,而Y-H系统呈现较高的T<0xE1><0xB5><0xA_>.

研究的目的:

合成和描述一个结合Lu和Y原子的新型三元化物.
研究Y原子替代对基于Lu-H的化物的超导性能的影响.

主要方法:

使用了高压和高温合成技术.
进行了结构特征和超导性能测量 (T<0xE1><0xB5><0xA_>,上临界场).
结合了理论计算和实验分析来了解底层机制.

主要成果:

成功合成了A15型三元化物Pm-3n (Lu,Y) 4H23.
在215 GPa时实现了112 K的超导过渡温度 (T<0xE1><0xB5><0xA_>),这是A15型超导体中最高的.
与二进制Pm-3n Lu4H23相比,三进制化合物显示T<0xE1><0xB5><0xA_>增加了60%,上临界场增强了61%.
替代导致了最小的体积膨胀和轻微的H-H键距离增加,增强了电子声.

结论:

用Y原子替换Lu显著提高了A15型化物的超导性能.
通过改进的电子带和声波软化驱动的增强电子声波合,是改善T<0xE1><0xB5><0xA_>的原因.
这项工作为先进的超导应用设计和优化三元化物提供了有价值的策略.

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

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

相关概念视频

Phase Diagram

Phase Diagram

The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).

Phase Diagrams of Ternary Systems

Phase Diagrams of Ternary Systems

Consider a ternary system, which is composed of three components: water (W), ethanoic acid (E), and trichloromethane (T). Here, Ethanoic acid (E) is fully miscible with both water (W) and trichloromethane (T), meaning it can mix entirely with either of them. However, water and trichloromethane have partial miscibility, meaning they can only mix to a certain extent, beyond which two separate phases will form.The phase diagram of a ternary system is represented as an equilateral triangle, where...