Magnetic phase diagram of antiferroquadrupole ordering in HoB2C2

Tatsuya Yanagisawa; Terutaka Goto; Yuichi Nemoto; Ryuta Watanuki; Kazuya Suzuki; Osamu Suzuki; Giyuu Kido

doi:10.1103/PhysRevB.71.104416

Magnetic phase diagram of antiferroquadrupole ordering in HoB2C2

Strongly Correlated Electrons 2009-11-11 v1

Authors: Tatsuya Yanagisawa , Terutaka Goto , Yuichi Nemoto , Ryuta Watanuki , Kazuya Suzuki , Osamu Suzuki , Giyuu Kido

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Abstract

The magnetic phase diagram for antiferro-quadrupole (AFQ) ordering in tetragonal HoB $_2$ C $_2$ has been investigated by measurements of elastic constants $C_{11}$ , $C_{44}$ and $C_{66}$ in fields along the basal $x$ - $y$ plane as well as the principal [001]-axis. The hybrid magnet (GAMA) in Tsukuba Magnetic Laboratory was employed for high field measurements up to 30 T. The AFQ phase is no longer observed above 26.3 T along the principal [001] axis in contrast to the relatively small critical field of 3.9 T in fields applied along the basal [110] axis. The quadrupolar intersite interaction of $O_{xy}$ and/or $O_2^2$ is consistent with the anisotropy in the magnetic phase diagram of the AFQ phase in HoB $_2$ C $_2$ .

Keywords

antiferroquadrupole ordering magnetic phase diagram HoB$_2$C$_2$ elastic constants quadrupolar interaction high magnetic field

Cite

@article{arxiv.cond-mat/0501505,
  title  = {Magnetic phase diagram of antiferroquadrupole ordering in HoB2C2},
  author = {Tatsuya Yanagisawa and Terutaka Goto and Yuichi Nemoto and Ryuta Watanuki and Kazuya Suzuki and Osamu Suzuki and Giyuu Kido},
  journal= {arXiv preprint arXiv:cond-mat/0501505},
  year   = {2009}
}

Comments

Phys. Rev. B. (2005) in press. approx 8 pages, 10 figures

Magnetic phase diagram of antiferroquadrupole ordering in HoB2C2

Abstract

Keywords

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