Magnetic phase diagram of Ce0.70Pr0.30B6

TL;DR

This study maps the magnetic phase diagram of Ce0.70Pr0.30B6 at low temperatures and high magnetic fields, revealing two incommensurate phases and a field-induced antiferromagnetic structure likely linked to quadrupolar order.

Contribution

It provides new neutron diffraction data on Ce0.70Pr0.30B6, identifying successive incommensurate phases and a field-induced antiferromagnetic order, advancing understanding of its complex magnetic behavior.

Findings

Two incommensurate phases in zero field

Field-induced antiferromagnetic structure at H >= 4.6 T

Connection to antiferroquadrupolar order

Abstract

Low-temperature, high-field (H[-110] <= 7.5 T), neutron diffraction experiments on single-crystal Ce0.70Pr0.30B6 are reported. Two successive incommensurate phases are found to exist in zero field. The appearance, for H >= 4.6 T at T = 2 K, of an antiferromagnetic structure, k{AF} = (1/2, 1/2, 1/2), most likely due to an underlying antiferroquadrupolar order, is discussed in connection with recent x-ray diffraction experiments.