Antiferro-quadrupole ordering of CexLa1-xB 6 under high magnetic fields

Mitsuhiro Akatsu; Osamu Suzuki; Yuichi Nemoto; Terutaka Goto; Shintaro Nakamura; Satoru Kunii; Giyuu Kido

doi:10.1016/j.physb.2005.01.277

Antiferro-quadrupole ordering of Ce_xLa_1-xB ₆ under high magnetic fields

Mitsuhiro Akatsu, Osamu Suzuki, Yuichi Nemoto, Terutaka Goto, Shintaro Nakamura, Satoru Kunii, Giyuu Kido

Institute for Materials Research (IMR) (institute affiliation only)

Research output: Contribution to journal › Article › peer-review

Abstract

We have investigated the magnetic phase diagrams for antiferro-quadrupole (AFQ) phase II in CexLa1-xB6 by ultrasonic measurements under high magnetic fields up to 30 T by using the hybrid-magnet (Gama) at National Institute for Materials Science in Tsukuba. Ce0.50La0.50B6 reveals that the AFQ phase boundary in applied magnetic fields along the [0 0 1] direction closes at about 29 T and the boundaries in fields along the [1 1 0] and [1 1 1] directions are still open even at 30 T. The AFQ phase transition temperature in Ce0.75La0.25B6 shows maximum at about 25 T in H∥[001]. These experimental results support the idea that the multipole RKKY-type inter-site interaction of the quadrupoles Oyz,Ozx, Oxy and the field-induced octupole Txyz play an important role in the highly anisotropic magnetic phase diagram of phase II of CexLa1-xB6 in high magnetic fields.

Original language	English
Pages (from-to)	962-964
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.277
Publication status	Published - 2005 Apr 30

Keywords

High magnetic field
Quadrupole ordering
Ultrasonic measurements

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Antiferro-quadrupole ordering of CexLa1-xB 6 under high magnetic fields",

abstract = "We have investigated the magnetic phase diagrams for antiferro-quadrupole (AFQ) phase II in CexLa1-xB6 by ultrasonic measurements under high magnetic fields up to 30 T by using the hybrid-magnet (Gama) at National Institute for Materials Science in Tsukuba. Ce0.50La0.50B6 reveals that the AFQ phase boundary in applied magnetic fields along the [0 0 1] direction closes at about 29 T and the boundaries in fields along the [1 1 0] and [1 1 1] directions are still open even at 30 T. The AFQ phase transition temperature in Ce0.75La0.25B6 shows maximum at about 25 T in H∥[001]. These experimental results support the idea that the multipole RKKY-type inter-site interaction of the quadrupoles Oyz,Ozx, Oxy and the field-induced octupole Txyz play an important role in the highly anisotropic magnetic phase diagram of phase II of CexLa1-xB6 in high magnetic fields.",

keywords = "High magnetic field, Quadrupole ordering, Ultrasonic measurements",

author = "Mitsuhiro Akatsu and Osamu Suzuki and Yuichi Nemoto and Terutaka Goto and Shintaro Nakamura and Satoru Kunii and Giyuu Kido",

year = "2005",

month = apr,

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doi = "10.1016/j.physb.2005.01.277",

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T1 - Antiferro-quadrupole ordering of CexLa1-xB 6 under high magnetic fields

AU - Akatsu, Mitsuhiro

AU - Suzuki, Osamu

AU - Nemoto, Yuichi

AU - Goto, Terutaka

AU - Nakamura, Shintaro

AU - Kunii, Satoru

AU - Kido, Giyuu

PY - 2005/4/30

Y1 - 2005/4/30

N2 - We have investigated the magnetic phase diagrams for antiferro-quadrupole (AFQ) phase II in CexLa1-xB6 by ultrasonic measurements under high magnetic fields up to 30 T by using the hybrid-magnet (Gama) at National Institute for Materials Science in Tsukuba. Ce0.50La0.50B6 reveals that the AFQ phase boundary in applied magnetic fields along the [0 0 1] direction closes at about 29 T and the boundaries in fields along the [1 1 0] and [1 1 1] directions are still open even at 30 T. The AFQ phase transition temperature in Ce0.75La0.25B6 shows maximum at about 25 T in H∥[001]. These experimental results support the idea that the multipole RKKY-type inter-site interaction of the quadrupoles Oyz,Ozx, Oxy and the field-induced octupole Txyz play an important role in the highly anisotropic magnetic phase diagram of phase II of CexLa1-xB6 in high magnetic fields.

AB - We have investigated the magnetic phase diagrams for antiferro-quadrupole (AFQ) phase II in CexLa1-xB6 by ultrasonic measurements under high magnetic fields up to 30 T by using the hybrid-magnet (Gama) at National Institute for Materials Science in Tsukuba. Ce0.50La0.50B6 reveals that the AFQ phase boundary in applied magnetic fields along the [0 0 1] direction closes at about 29 T and the boundaries in fields along the [1 1 0] and [1 1 1] directions are still open even at 30 T. The AFQ phase transition temperature in Ce0.75La0.25B6 shows maximum at about 25 T in H∥[001]. These experimental results support the idea that the multipole RKKY-type inter-site interaction of the quadrupoles Oyz,Ozx, Oxy and the field-induced octupole Txyz play an important role in the highly anisotropic magnetic phase diagram of phase II of CexLa1-xB6 in high magnetic fields.

KW - High magnetic field

KW - Quadrupole ordering

KW - Ultrasonic measurements

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