highmagnetization

High magnetization denotes a material's large magnetic moment per unit volume, typically captured by a high saturation magnetization (Ms) or a large net magnetization under an external field. It is most relevant for ferromagnetic and ferrimagnetic materials, where moments align to produce a strong overall field. Antiferromagnets can exhibit substantial local moments but low net magnetization, making high Ms a better proxy for practical magnetic strength.

Materials with high magnetization include NdFeB and SmCo rare-earth magnets, and some FePt-based compounds. Their large Ms arises from strong exchange coupling and high magnetic anisotropy. Achieving high Ms depends on composition, crystal structure, microstructure, grain size, and temperature. Engineering through alloying, heat treatment, and nanostructuring can optimize Ms and the energy product, though cost and material stability are important considerations.

Measurement typically uses magnetometry (VSM or SQUID) to obtain Ms versus temperature. In applications, high magnetization enables compact, powerful permanent magnets for motors, generators, and data storage. Trade-offs with coercivity, thermal stability, and corrosion resistance must be managed to suit specific operating environments.