Formation of bulk ferromagnetic nanostructured Fe40Ni40P14B6 alloys by metastable liquid spinodal decomposition

• 来源期刊: 中国科学E辑（英文版）
• 年，卷（期）: 2009,（7）
• 页码范围: 1919-1922
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11431-009-0108-2

摘要

Nanostructured Fe40Ni40P14B6 alloy ingots of 3-5 mm in diameter could be synthesized by a metastable liquid state spinodal decomposition method. For undercooling △T＞ 260 K, the microstructure of the undercooled specimen had exhibited liquid state spinodal decomposition in the undercooled liquid state. The microstructure could be described as two intertwining networks with small grains dispersed in them. For undercooling △T＞290 K, the overall microstructure of the specimen changed into a granular morphology. The average grain sizes of the small and large grains are ≌ 30 nm and ≌ 80 nm,respectively. These prepared samples are soft magnets with saturation magnetization Bs≌0.744 T.