Formation of bulk ferromagnetic nanostructured Fe_(40)Ni_(40)P_(14)B_6 alloys by metastable liquid spinodal decomposition  

作　　者：LI Qiang1,2 1 School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China 2 Department of Physics, The Chinese University of HongKong, Shatin N.T., HongKong, China 

出　　处：《Science China(Technological Sciences)》2009年第7期1919-1922,共4页中国科学（技术科学英文版）

基　　金：Supported by the Hong Kong Research Grants Council the National Natural Science Foundation of China(Grant No.50861007);Xinjiang University Doctoral Re-search Start-up Grant(Grant No.BS050102)

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.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.

关 键 词：nanomaterials magnetic materials solidification BULK NANOSTRUCTURED alloy Fe40Ni40P14B6 METASTABLE LIQUID SPINODAL decomposition 

分 类 号：TB383.1[一般工业技术—材料科学与工程]