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

Access to Document

10.1016/j.physb.2005.01.277

Cite this

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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",

note = "Funding Information: In the present work, one of the authors (M. A.) was supported in part by Inoue Foundation for Science.",

year = "2005",

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

language = "English",

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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

N1 - Funding Information: In the present work, one of the authors (M. A.) was supported in part by Inoue Foundation for Science.

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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