Abstract
The ternary system which a rare earth component is doped in Gd-Co alloy is expected to have a variety of magnetic properties. We prepared (Gd1-xCox)1-yEUy alloy thin films (x∼0.85, 0 ≤ y ≤ 0.10) and measured the ferromagnetic resonance in a temperature region from 300 K to 400 K and also at 77 K. The effective g-value was always greater than that at 300 K and suddenly increased at about 10 at.%Eu. A possible model to explain the concentration dependence of g-value results in the linear decrease of Co moment with increase of Eu concentration.
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