Title :
Magnetic properties of the amorphous Fe-Zr-B-Ni alloys annealed below the crystallization temperature
Author :
Yu, Seong-Cho ; Lee, Soo-Hyung ; Kim, Kyeong-Sup ; Rao, K.V. ; Kim, Kwang-Youn ; Kang, Il-Koo
Author_Institution :
Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea
fDate :
11/1/1995 12:00:00 AM
Abstract :
We have studied the magnetic properties of amorphous Fe83-x Zr7B10Nix alloys annealed below the crystallization temperature. Such materials are considered to have a potential for high frequency core material applications because of possibilities of obtaining high effective permeability and low coercive force. The addition of Ni content of approximately 0.5-1.5 at.% was found to be effective in improving the soft magnetic properties. The temperature dependence of magnetization measured by a SQUID magnetometer are found to be in good agreement with the spin wave theory. The spectroscopic splitting g values obtained by ferromagnetic resonance (FMR) experiments increase with increasing Ni content. The values of the spin wave stiffness increases from 62.7 meV Å2 to 95.2 meV Å2 with increasing the concentration of Ni. From these experimental results, the range of the exchange interaction are deduced
Keywords :
amorphous magnetic materials; annealing; boron alloys; coercive force; exchange interactions (electron); ferromagnetic materials; ferromagnetic resonance; g-factor; iron alloys; magnetic permeability; magnetisation; nickel alloys; soft magnetic materials; spin waves; zirconium alloys; (FeNi)83Zr7B10; FMR; Ni content; amorphous Fe-Zr-B-Ni alloys; amorphous Fe83-xZr7B10Nix alloys; annealing; crystallization temperature; exchange interaction; ferromagnetic resonance; high effective permeability; high frequency core material applications; low coercive force; magnetic properties; magnetization; soft magnetic properties; spectroscopic splitting g values; spin wave stiffness; spin wave theory; temperature dependence; Amorphous materials; Annealing; Crystalline materials; Iron alloys; Magnetic materials; Magnetic properties; Magnetic resonance; Nickel alloys; Soft magnetic materials; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
