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Photochemical modification of magnetic properties in organic low-dimensional conductors

JSSC182-10_p2733-2742.pdf678.92 kBPDF見る/開く

タイトル: Photochemical modification of magnetic properties in organic low-dimensional conductors
著者: Naito, Toshio 著作を一覧する
Kakizaki, Akihiro 著作を一覧する
Wakeshima, Makoto 著作を一覧する
Hinatsu, Yukio 著作を一覧する
Inabe, Tamotsu 著作を一覧する
キーワード: Organic charge transfer salt
Low-dimensional conductor/magnet
Photochemical reaction
Conducting/magnetic property
発行日: 2009年10月
出版者: Elsevier Inc.
誌名: Journal of Solid State Chemistry
巻: 182
号: 10
開始ページ: 2733
終了ページ: 2742
出版社 DOI: 10.1016/j.jssc.2009.07.032
抄録: Magnetic properties of organic charge transfer salts Ag(DX)2 (DX = 2,5-dihalogeno-N,N'-dicyanoquinonediimine; X = Cl, Br, I) were modified by UV irradiation from paramagnetism to diamagnetism in an irreversible way. The temperature dependence of susceptibility revealed that such change in magnetic behavior could be continuously controlled by the duration of irradiation. The observation with scanning electron microprobe revealed that the original appearance of samples, e.g. black well-defined needle-shaped shiny single crystals, remained after irradiation irrespective of the irradiation conditions and the duration. Thermochemical analysis and X-ray diffraction Study demonstrated that the change in the physical properties were due to (partial) decomposition of Ag(DX)2 to AgX, which was incorporated in the original Ag(DX)2 lattices. Because the physical properties of low-dimensional organic conductors are very sensitive to lattice defects, even a small amount of AgX could effectively modify the electronic properties of Ag(DX)2 without making the original crystalline appearance collapse.
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 内藤 俊雄


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