Figure 2
Temperature dependences of the real part (〈χ1〉), imaginary part (〈χ2〉) and modulus (|〈χ〉|) of the susceptibility 〈χ〉 of (NH4)2SO4 crystals during heating at E = 8.5 eV. The insert shows the temperature dependence of the modulus of the susceptibility |〈χ〉|(T) over a larger temperature range. |