TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=18144379461&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18144379461&partnerID=8YFLogxK
U2 - 10.1016/j.physb.2005.01.277
DO - 10.1016/j.physb.2005.01.277
M3 - Article
AN - SCOPUS:18144379461
VL - 359-361
SP - 962
EP - 964
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - SPEC. ISS.
ER -