A New Interpretation of NMR in Quadrupolar Ordering Phase of CeB6- Consistency with Neutron Scattering -

The hyperfine coupling between the multipolar moments of the Ce ion and the nucleus of B ion is discussed phenomenologically for the antiferro-quadrupolar ordering (AFQ) phase of CeB 6 . The longstanding mutual inconsistency between neutron diffraction and NMR in phase II can be resolved by considering the induced octupolar moment with the T x y z type. The experimental facts indicate that the AFQ of the Γ 5 + symmetry (i.e. O x y , O y z and O z x types) is realized in CeB 6 .