DataVXAdvanced SciencePaper
journal article·2024-07Open access

Turning Ultra‐Low Coercivity and Ultra‐High Temperature Stability Within 897 K via Continuous Crystal Ordering Fluctuations

Runqiu Lang, Haiyang Chen, Jinrong Zhang, Haipeng Li, Defeng Guo, Jianyuan Kou, Lei Zhao, Yikun Fang, Xiaoqiang Wang, Xiwei Qi, Yan‐dong Wang, Yang Ren, Haizhou Wang

Advanced Science· Volume 11· Issue 28
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Source abstract

Abstract

Abstract High‐performance soft magnetic materials are important for energy conservation and emission reduction. One challenge is achieving a combination of reliable temperature stability, high resistivity, high Curie temperature, and high saturation magnetization in a single material, which often comes at the expense of intrinsic coercivity–a typical trade‐off in the family of soft magnetic materials with homogeneous microstructures. Herein, a nanostructured FeCoNiSiAl complex concentrated alloy is developed through a hierarchical structure strategy. This alloy exhibits superior soft magnetic properties up to 897 K, maintaining an ultra‐low intrinsic coercivity (13.6 A m−1 at 297 K) over a wide temperature range, a high resistivity (138.08 µΩ cm−1 at 297 K) and the saturation magnetization with only a 16.7% attenuation at 897 K. These unusual property combinations are attributed to the dual‐magnetic‐state nature with exchange softening due to continuous crystal ordering fluctuations at the atomic scale. By deliberately controlling the microstructure, the comprehensive performance of the alloy can be tuned and controlled. The research provides valuable guidance for the development of soft magnetic materials for high‐temperature applications and expands the potential applications of related functional materials in the field of sustainable energy.
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Research context

Metals & alloysNanomaterials

OpenAlex topics: Magnetic properties of thin films · Magnetic and transport properties of perovskites and related materials · Magnetic Properties of Alloys

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Center for Materials Service Safety University of Science and Technology Beijing Beijing 100083 China

Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

Institute for Materials Intelligent Technology Liaoning Academy of Materials Shenyang 110004 China

School of Materials Science and Engineering Northeastern University Shenyang 110819 China

Functional Materials Research Institute Central Iron and Steel Research Institute Beijing 100081 China

State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao 066004 China

College of Science Yanshan University Qinhuangdao 066004 China

Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Metal Materials Characterization Central Iron and Steel Research Institute Beijing 100081 China

School of Resources and Materials Northeastern University at Qinhuangdao Qinhuangdao 066004 China

Department of Physics City University of Hong Kong Hong Kong SAR 999077 China

Funding

Fundamental Research Funds for the Central Universities · National Postdoctoral Program for Innovative Talents · National Natural Science Foundation of China

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