Work

Influence of Er and Zr Content on the Phase Composition and Microstructure of SmCo Magnets with Low Remanence Temperature Coefficients

Year: 2025

Type: article

Abstract: The influence of Er and Zr content on SmCo magnets with low remanence temperature coefficients is investigated. Variations of magnetic properties with Er and Zr content are analyzed. Results show that excessive Er substitution leads to phase separation, but the reduction of Zr content eliminates the impurity phases. First‐principle calculations reveal the stabilizing effect of Er on phases with Smn+1Co5n−1 structures. Magnets with satisfactory magnetic properties and temperature compensation are obtained, of which the one with 40% Er substitution exhibits (BH)max of 165 kJ·m−3 at room temperature and a low‐temperature coefficient of remanence of −0.014%·°C−1 within the range of 20–100 °C.

Source: Advanced Engineering Materials

DOI: 10.1002/adem.202402771

Authors: Qi Zhang, Shulan Zuo, Shengsan Yang, Jinghua Liu, Dazhuang Kang, Chengbao Jiang

Institution: Beihang University

Language: English

Topic: Magnetic Properties of Alloys

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities

Awards: G2315319521, G3114819178, G8290153653