Magnetic torque and ac and dc magnetic susceptibility measurements on PTMA0.5[Fe(Pc)(CN)2]･CH3CN: Origin of spontaneous magnetization in [Fe(Pc)(CN)2] molecular conductors

Tajima, Hiroyuki; Yoshida, Gosuke; Matsuda, Masaki; Yamaura, Jun-Ichi; Hanasaki, Noriaki; Naito, Toshio; Inabe, Tamotsu

Magnetic torque and ac and dc magnetic susceptibility measurements on PTMA0.5[Fe(Pc)(CN)2]･CH3CN: Origin of spontaneous magnetization in [Fe(Pc)(CN)2] molecular conductors

Tajima, Hiroyuki; Yoshida, Gosuke; Matsuda, Masaki et al.

Physical Review B, 2009, 80(2), 024424

Permalink : https://hdl.handle.net/2115/39046

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アクセス権	open access
URI	https://hdl.handle.net/2115/39046
タイトル	Magnetic torque and ac and dc magnetic susceptibility measurements on PTMA0.5[Fe(Pc)(CN)2]･CH3CN: Origin of spontaneous magnetization in [Fe(Pc)(CN)2] molecular conductors
著者	Tajima, Hiroyuki ; Yoshida, Gosuke ; Matsuda, Masaki ; Yamaura, Jun-Ichi ; Hanasaki, Noriaki ; Naito, Toshio ; Inabe, Tamotsu
著者名 Tajima, Hiroyuki
著者名 Yoshida, Gosuke
著者名 Matsuda, Masaki
著者名 Yamaura, Jun-Ichi
著者名 Hanasaki, Noriaki
e-Rad_Researcher 20227713 著者名 Naito, Toshio
著者名 Inabe, Tamotsu
言語	英語
キーワード	antiferromagnetic materials
	ferrimagnetic materials
	Heisenberg model
	magnetic susceptibility
	magnetisation
	organic compounds
	torque
発行日	2009-07
出版者	American Physical Society
収録物名	Physical Review B
巻(号)	80(2)
ページ	024424
抄録	Magnetic torque (3≤T≤46 K), dc magnetic susceptibility (2≤T≤300 K), and ac magnetic susceptibility (2≤T≤30 K) are reported for PTMA0.5[Fe(Pc)(CN)2]･CH3CN. The torque curves exhibit a sinusoidal line shape for temperatures above 6 K. This result as well as the temperature dependence of the dc magnetic susceptibility above 13 K was analyzed by employing an anisotropic Heisenberg model in one dimension. The compound exhibits spontaneous magnetization below 6 K. The torque measurements at 3 K revealed that the direction of this spontaneous magnetization is parallel to the easy axis of the mother antiferromagnetism. The ac susceptibility measurements demonstrated the fluctuation of the spontaneous magnetization up to 13 K. A model of charge-ordered ferrimagnetism is proposed in order to explain these results. This model explains the spontaneous magnetization which commonly appears in conducting salts of [Fe(Pc)(CN)2] and their derivatives.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2009 The American Physical Society
PISSN	1098-0121
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.80.024424