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  • #6532
    nvrafelg
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    The hyperfine field has the same strength for both the 50 K and 18 K because the positions of the valleys remain the same. What does change with temperature is the intensity of the valleys which means more nuclei will contribute to the resonant scattering at low temperature. Maybe the thermal energy causes a fluctuation of magnetic moments and then on average the magnetic moment is 0.

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