Title :
Mossbauer studies of nanocrystalline Fe83B9Nb 7Cu1 alloy by flash annealing
Author :
Chul Sung Kim ; Sung Baek Kim ; Lee, Hi Min ; Uhm, Young Rang ; Kim, K.Y. ; Noh, T.H. ; Ok, Hang Nam
Author_Institution :
Dept. of Phys., Kookmin Univ., Seoul, South Korea
fDate :
9/1/1997 12:00:00 AM
Abstract :
Melt-spun Fe83B9Nb7Cu1 alloy with ultrathin ribbon has been studied with Mossbauer spectroscopy and X-ray diffraction. The enhanced magnetic property of the flash-annealed alloy was attributed to the reduced α-Fe phase grain size to 6 nm and the higher effective permeability and smaller magnetic core loss at 1 MHz than conventional annealed alloys. The occupied area of the nanocrystalline phase at the optimum 773 K is about 73% whereas that for conventional annealing temperature at 893 K is about 71%. The flash annealing technique was effective in improving the high-frequency soft magnetic property of nanocrystalline Fe83B9Nb7Cu1 alloy
Keywords :
Mossbauer effect; X-ray diffraction; amorphous magnetic materials; boron alloys; copper alloys; ferromagnetic materials; grain size; iron alloys; magnetic leakage; magnetic permeability; metallic glasses; nanostructured materials; niobium alloys; soft magnetic materials; 1 MHz; 773 K; 893 K; Fe83B9Nb7Cu1; Mossbauer studies; X-ray diffraction; annealing temperature; enhanced magnetic property; flash annealing; high-frequency soft magnetic property; higher effective permeability; magnetic core loss; melt-spun Fe83B9Nb7Cu1 alloy; nanocrystalline Fe83B9Nb7Cu1 alloy; reduced α-Fe phase grain size; ultrathin ribbon; Annealing; Copper alloys; Grain size; Iron alloys; Magnetic cores; Magnetic properties; Niobium alloys; Permeability; Spectroscopy; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
