## 抄録

Antiferroquadrupolar (AFQ) and antiferromagnetic (AFM) transitions in Ho_{1 - x}Dy_{x}B_{2}C_{2} (0 ≤ x ≤ 1.0) have been investigated on the single-crystalline samples by magnetization and specific heat measurements. As the Dy concentration increases, the both transition temperatures increases from T_{Q} = 4.5 K and T_{N} = 5.9 K for x = 0 to T_{Q} = 24.7 K and T_{N} = 15.3 K for x = 1. For x = 0.2 and 0.3, there appears a single transition at which the AFQ and AFM transitions occur simultaneously. For 0.4 ≤ x, the two transition temperatures are reversed. The temperature dependence of specific heat is interpreted well by assuming that the entropy of Rln 3 is released through the successive transitions in HoB_{2}C_{2}, that is, the 4f ground state of Ho^{3+} ion is a quasi-triplet. It is supposed that the Ho^{3+} ion has a rather small quadrupolar moment compared with the Dy^{3+} quadrupole.

本文言語 | English |
---|---|

ページ（範囲） | 1705-1714 |

ページ数 | 10 |

ジャーナル | journal of the physical society of japan |

巻 | 70 |

号 | 6 |

DOI | |

出版ステータス | Published - 2001 6月 1 |

## ASJC Scopus subject areas

- 物理学および天文学（全般）

## フィンガープリント

「Antiferroquadrupolar Ordering in the Pseudo-Binary Tetragonal Compounds Ho_{1 - X}Dy

_{x}B

_{2}C

_{2}」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。