Title :
Temperature dependence of the magnetization of glassy and nanocrystalline Fe82M7B10Cu1 [M=Zr,Hf,Nb] alloys with high permeability at high frequencies
Author :
Kim, K.S. ; Ström, V. ; Rao, K.V. ; Lee, J.S. ; Kim, K.Y. ; Noh, T.H. ; Yu, S.C.
Author_Institution :
Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden
fDate :
11/1/1995 12:00:00 AM
Abstract :
We report the salient features of the magnetic properties of glassy and nanocrystalline Fe82M7B10Cu 1 [M=Zr,Hf,Nb] alloys. By controlled annealing, fine 4-6 nm grain size bcc-Fe is formed in a ductile glassy matrix, which gives good soft magnetic properties like permeability and low coercive field. From the low temperature magnetic data and ferromagnetic resonance studies we determine and compare the changes in the spin wave exchange stiffness constants as well as the range of exchange interactions in the glassy and nanocrystalline states
Keywords :
amorphous magnetic materials; annealing; boron alloys; coercive force; copper alloys; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; hafnium alloys; iron alloys; magnetic permeability; magnetisation; metallic glasses; nanostructured materials; niobium alloys; soft magnetic materials; spin waves; zirconium alloys; 4 to 6 nm; FCC Fe; Fe82Hf7B10Cu1; Fe82Nb7B10Cu1; Fe82Zr7B10Cu1; controlled annealing; ductile glassy matrix; exchange interactions; ferromagnetic resonance; glassy phase; grain size; high frequencies; high permeability; low coercive field; low temperature; magnetic properties; magnetization; nanocrystalline; permeability; soft magnetic properties; spin wave exchange stiffness constants; temperature dependence; Annealing; Copper alloys; Grain size; Iron alloys; Magnetic properties; Magnetic resonance; Magnetization; Permeability; Size control; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
