Composition and microstructural control of Sm2Fe17N3 powders: a promising candidate for next-generation permanent magnets

Abstract

Sm₂Fe₁₇N₃ powders have drawn much attention in both fundamental research and industrial applications due to their excellent magnetic properties. The magnetic properties of Sm₂Fe₁₇N₃ powders mainly depend on the composition and microstructure. Herein, the intrinsic and extrinsic magnetic properties of Sm₂Fe₁₇N₃ powders are introduced, where the correlation between the composition, microstructure, and magnetic properties is discussed. Based on the correlation, we provide a detailed description of the synthesis methods and regulation strategies for Sm₂Fe₁₇N₃ powders, aiming to promote the design and preparation of Sm₂Fe₁₇N₃ powders with better magnetic properties.