Abstract
The magnetization and Curie temperature of amorphous T 80-xGd xB 20 alloys (0≤x≤24) were investigated. The Gd moment is found to be 7μ B in agreement with the theoretical value at 4.2 K. This would indicate a collinear spin structure for Gd. A mean field model has been used to explain the temperature dependence of the magnetization. This analysis allows to determine the spin value of T and the effective exchange interactions between T-T and T-Gd atoms which are found correlated with the T moment.
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