Field-driven successive phase transitions and magnetic excitations of spin-1/2 frustrated antiferromagnet Ba2CoTeO6

• 資料種別: 博士論文
• タイトル: Field-driven successive phase transitions and magnetic excitations of spin-1/2 frustrated antiferromagnet Ba2CoTeO6
• 著者・編者: CHANLERT, Purintorn; Chanlert, Purintorn
• 著者標目: CHANLERT, Purintorn; Chanlert, Purintorn
• 出版年月日等: 2017-09
• 出版年（W3CDTF）: 2017-09
• 授与機関名: 東京工業大学
• 授与年月日: 2017-09-20
• 報告番号: 甲第10674号
• 学位: 博士(学術)
• 本文の言語コード: eng
• 件名標目: Heisenberg TLAF, Ising J1-J2 HLAF, frustration in magnets, Ba2CoTeO6
• 対象利用者: 一般
• 一般注記: Ba2CoTeO6 is a perovskite type compound, in which the magnetic ion Co2+ possesses the effective spin-1/2 at low temperatures. Magnetic properties of Ba2CoTeO6 have been investigated using single crystals. High-field magnetization and specific heat measurements reveal that Ba2CoTeO6 is composed of two subsystems, (A) S=1/2 Heisenberg-like triangular lattice antiferromagnet with TN2=2.9 K and (B) J1-J2 Ising-like honeycomb lattice antiferromagnet with TN1=11.9 K, and that the interaction between these two subsystems are very weak. We also performed electron spin resonance (ESR) measurement for H || c at 1.5 K (< TN2) and observed several ESR modes, which include the collective excitations in subsystem A and the localized excitations in subsystem B. From these measurements, magnetic parameters of Ba2CoTeO6 were determined.; identifier:oai:t2r2.star.titech.ac.jp:50384177
• 記録形式（IMT）: application/pdf
• 一次資料へのリンクURL: http://t2r2.star.titech.ac.jp/rrws/file/CTT100749911/ATD100000413/PhD_thesis Purintorn_Chanlert.pdf/ comment：fulltext; http://t2r2.star.titech.ac.jp/rrws/file/CTT100749911/ATD100000413/PhD_thesis%20Purintorn_Chanlert.pdf
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 東京工業大学 : 東京工業大学リサーチリポジトリ