title: Anomalous temperature dependence of the magnetic field induced antiferromagnetic moment in the antiferroquadrupolar ordered state of CeB6.
abstract: The magnetic field induced antiferromagnetic moment M(AF) at low magnetic fields in the antiferroquadrupolar (AFQ) ordered phase of CeB6 was investigated by elastic neutron diffraction experiments for H parallel [110]. The peak intensity at the AF magnetic reciprocal point (1 / 2,1 / 2,1 / 2) corresponding to M(2)(AF) increases with decreasing temperature below the AFQ ordering temperature T(Q), and exhibits a broad maximum at T approximately 3 K and decreases with a further decrease of temperature. This unusual behavior of M(AF) at low fields is explained as a result of the competition between the AF-octupolar and AF-exchange interactions in the O(xy) type AFQ ordered state.
authors: Department of Quantum Matter, ADSM, Hiroshima University, Japan.
authors: M
authors: M
authors: Sera
authors: H
authors: H
authors: Ichikawa
authors: T
authors: T
authors: Yokoo
authors: J
authors: J
authors: Akimitsu
authors: M
authors: M
authors: Nishi
authors: K
authors: K
authors: Kakurai
authors: S
authors: S
authors: Kunii