New Aspects of the Temperature-Magnetic Field Phase Diagram of CeB6

Abstract

We have measured the magnetic field dependence of the paramagnetic to the field-induced high temperature antiferroquadrupolar magnetically ordered phase transition is CeB6 from 0 to 60 T using a variety of techniques. It is found that the field-dependent phase separation line becomes re-entrant above 35 T and below 10 K. Measurements of resonant ultra-sound, specific heat and neutron diffraction show conclusively that the zero-field temperature-dependent phase transition is to a state with no ordered dipole moments, but with second order transition signatures in both sound attenuation and specific heat.

4 pages, 4 figures, 11 references, submitted to Physical Review Letters

References in corpus (3)

• Direct Observation of Antiferro-Quadrupolar Ordering - Resonant X-ray Scattering Study of DyB2C2
• Magnetic Field Dependence of the Paramagnetic to the High Temperature Magnetically Ordered Phase Transition in CeB6
• Quadrupolar and magnetic ordering in CeB6

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• A "hidden" transition in heavy fermion compound CeB${}_6$ at $T\sim$ 20 K?
• Magnetoresistance in paramagnetic heavy fermion metals
• Two-orbital model for CeB${}_6$