Magnetic Phase Diagrams with Possible Field-induced Antiferroquadrupolar Order in TbB$_2$C$_2$

Koji Kaneko; Hideya Onodera; Hiroki Yamauchi; Takuo Sakon; Mitsuhiro Motokawa; Yasuo Yamaguchi

doi:10.1103/PhysRevB.68.012401

paper

Magnetic Phase Diagrams with Possible Field-induced Antiferroquadrupolar Order in TbB $_{2}$ C $_{2}$

arXiv:cond-mat/0212082 · doi:10.1103/PhysRevB.68.012401

Abstract

Magnetic phase diagrams of a tetragonal antiferromagnet TbB $_{2}$ C $_{2}$ were clarified by temperature and field dependence of magnetization. It is noticeable that the N{é}el temperature in TbB $_{2}$ C $_{2}$ is anomalously enhanced with magnetic fields, in particular the enhancement reaches 13.5 K for the $< 110 >$ direction at 10 T. The magnetization processes as well as the phase diagrams are well interpreted assuming that there appear field-induced antiferroquadrupolar ordered phases in TbB $_{2}$ C $_{2}$ . The phase diagrams of the AFQ compounds in RB $_{2}$ C $_{2}$ are systematically understood in terms of the competition with AFQ and AFM interactions.

4 pages, 4 figures, RevTeX4

Magnetic Phase Diagrams with Possible Field-induced Antiferroquadrupolar Order in TbB2​C2​

Abstract

Magnetic Phase Diagrams with Possible Field-induced Antiferroquadrupolar Order in TbB $_{2}$ C $_{2}$