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Magnetic properties of the amorphous Fe-Zr-B-Ni alloys annealed below the crystallization temperature

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6 Author(s)
Seong-Cho Yu ; Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea ; Soo-Hyung Lee ; Kyeong-Sup Kim ; Rao, K.V.
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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

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Magnetics, IEEE Transactions on  (Volume:31 ,  Issue: 6 )