Title :
Low temperature magnetization behavior in nanocrystalline materials: spin waves
Author :
Pulido, E. ; Crespo, P. ; Hernando, A.
Author_Institution :
Inst. de Magnetismo Aplicado, RENFE-UCM, Madrid, Spain
fDate :
9/1/1992 12:00:00 AM
Abstract :
The low-temperature magnetization behavior of ferromagnetic ribbons with the composition Fe73.5Si13.5B9 Cu1Nb3 in amorphous, and partially and fully crystallized states was studied in the high applied field regime (5T) using a SQUID (superconducting quantum interference device) magnetometer. The experimental data can be explained by means of the usual spin waves model. The spin wave stiffness constant D was determined. The values of D depend strongly on the degree of crystallization
Keywords :
boron alloys; copper alloys; crystallisation; ferromagnetic properties of substances; iron alloys; magnetic properties of amorphous substances; magnetisation; nanostructured materials; niobium alloys; silicon alloys; spin waves; Fe73.5Si13.5B9Cu1Nb 3; SQUID magnetometer; amorphous state; crystallization; crystallized states; ferromagnetic ribbons; high applied field regime; low-temperature magnetization; nanocrystalline material; spin wave stiffness constant; Amorphous magnetic materials; Amorphous materials; Crystalline materials; Crystallization; Heat treatment; Magnetic materials; Magnetization; Nanostructured materials; Soft magnetic materials; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
