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タイトル
和文:Coupled spin-12 antiferromagnetic chain Cs2LiRuCl6 with partially disordered crystal lattice. 
英文:Coupled spin-1/2 antiferromagnetic chain Cs2LiRuCl6 with partially disordered crystal lattice 
著者
和文: 渡辺一充, 栗田伸之, 田中秀数, 杉山晴紀, 植草秀裕, Ismael Diaz-Ortega, 野尻浩之.  
英文: Kazumitsu Watanabe, Nobuyuki Kurita, HIDEKAZU TANAKA, Haruki Sugiyama, hidehiro UEKUSA, Ismael Diaz-Ortega, Hiroyuki Nojiri.  
言語 English 
掲載誌/書名
和文:Physical Review B 
英文:Physical Review B 
巻, 号, ページ Vol. 103    No. 6    pp. 064419
出版年月 2021年2月 
出版者
和文:American Physical Society 
英文:American Physical Society 
会議名称
和文: 
英文: 
開催地
和文: 
英文: 
公式リンク https://journals.aps.org/prb/
 
DOI https://doi.org/10.1103/physrevb.103.064419
アブストラクト We detd. the crystal structure of Cs2LiRuCl6, which was synthesized in this work, and investigated its magnetic properties. Cs2LiRuCl6 has a hexagonal structure composed of linear chains of face-sharing RuCl6 and LiCl6 octahedra. In two thirds of the structural chains, Ru3+ and Li+ sites are almost ordered, while in the other chains their sites are disordered. This situation is analogous to the ground state of the antiferromagnetic Ising model on a triangular lattice. Using ESR, we evaluated the g factors of Ru3+ with effective spin-12 as gc=2.72 and gab=1.50 for magnetic fields H parallel and perpendicular to the c axis, resp. Magnetization curves for H‖c and H⊥c are highly anisotropic. However, these magnetization curves approx. coincide when normalized by the g factors. It was found from the magnetization and sp. heat results that Cs2LiRuCl6 can be described as a coupled one-dimensional S=1/2 Heisenberg-like antiferromagnet with J/kB≃3.7 K. Three-dimensional ordering occurs at TN=0.48 K. A magnetic phase diagram for H‖c is also presented. [on SciFinder(R)]

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