ダウンロード数: 222
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
c5tc02075a.pdf | 2.16 MB | Adobe PDF | 見る/開く |
タイトル: | Spin frustration in antiperovskite systems: (TTF˙+or TSF˙+)3[(Mo6X14)2−Y−] |
著者: | Hiramatsu, Takaaki Yoshida, Yukihiro https://orcid.org/0000-0003-4630-9559 (unconfirmed) Saito, Gunzi Otsuka, Akihiro https://orcid.org/0000-0002-3141-0702 (unconfirmed) Yamochi, Hideki Shimizu, Yasuhiro Hattori, Yuma Nakamura, Yuto Kishida, Hideo Ito, Hiroshi Kirakci, Kaplan Cordier, Stéphane Perrin, Christiane |
著者名の別形: | 矢持, 秀起 |
発行日: | 24-Sep-2015 |
出版者: | Royal Society of Chemistry (RSC) |
誌名: | Journal of Materials Chemistry C |
巻: | 3 |
号: | 42 |
開始ページ: | 11046 |
終了ページ: | 11054 |
抄録: | Two novel antiperovskite charge-transfer (CT) solids composed of a tetraselenafulvalene radical cation (TSF˙+), a dianionic molybdenum cluster unit [Mo6X14]2−, and a halogen anion (Y−) (X, Y = Cl, Br) were prepared by electrocrystallization. Their crystal structures and magnetic properties with regard to spin frustration are discussed together with those of isostructural tetrathiafulvalene (TTF) CT solids previously reported. Both TSF and TTF salts have an apex sharing distorted octahedral spin lattice with a rhombohedral R[3 with combining macron] space group. The calculated overlap integrals based on the crystal structures and insulating nature of the TSF salts indicate that they are Mott insulators. Their spin susceptibilities obeyed the Curie–Weiss law and exhibited an antiferromagnetic ordering at lower temperatures for the TSF salts (Néel temperature, TN = 3.0 K for X = Y = Cl and 5.5 K for X = Y = Br) than the TTF salts. The Curie–Weiss temperatures (|ΘCW| ∼ 1.6–6.3 K) for the TSF salts are lower than those of the TTF salts. For the TSF salts, spin-flop behavior was detected at 3.2 T for X = Y = Cl and 1.5 T for X = Y = Br at 1.9 K. Due to both the distortion of the octahedral geometry of the spin lattice and the anisotropic molecular orientation, the geometrical spin frustrations in TSF and TTF systems are weakened. |
著作権等: | This is the accepted version of the article, which has been published in final form at http://dx.doi.org/10.1039/c5tc02075a. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/219008 |
DOI(出版社版): | 10.1039/c5tc02075a |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。