The electric field gradient for Gd in gadolinium metal

We have examined the temperture dependence of the efg for GdGd above the Curie point. Using anI π =10+ isomer in144Gd as a probe nucleus, we find a weakT3/2 dependence withB=(1.5±0.4) 10−5 K−3/2. The absolute value of the efg at 332 K was measured by Coulomb excitation of 2+ states in156, 158, 160Gd, yielding |eq(332 K)|=(3.43±0.14) 1017 V/cm2. A possible small deviation from theT3/2 temperature dependence of the efg for ferromagnetic Gd is discussed.