AC susceptibility and NQR measurements on CeCu6 below 5 mK
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We have measured the zero field ac magnetic susceptibility of single and polycrystalline CeCu6 samples down to 100 K. For the single crystal sample, the susceptibility shows pronounced anisotropic behavior with respect to the crystal orientation. At 3 mK the susceptibility along two different crystal orientations shows a broad peak, and at 500 K the susceptibility shows a second peak along one orientation and a plateau along the other. The susceptibility of the polycrystalline sample has a similar peak at 3 mK. NQR measurements are under way to study the Cu nuclear spin system in this compound in order to gain additional information about the nature of the peaks. 1994.