Uniaxial strain study in purely organic ferromagnet α-TDAE-C₆₀ – Mechanism and structure

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• 作者：Kenji Mizoguchi ; Masato Takei ; Hirokazu Sakamoto ; Tohru Kawamoto ; Madoka Tokumoto ; Ales Omerzu and Dragan Mihailovic
• 关键词：Organic ferromagnetism ; Uniaxial strain ; ESR ; Curie temperature ; TDAE-C60
• 刊名：Polyhedron
• 出版年：2005
• 期刊代码：87_02775387
• 类别：ch
• 出版时间：2005
• 卷：24
• 期：16-17
• 页码：2173-2175
• 文件大小：124 K

摘要

ESR has been carried out in ferromagnetic α-TDAE-C₆₀ under uniaxial strain to study the mechanism and structure of ferromagnetism. Pressure is applied to a single crystal embedded in epoxy resin with a clamp type pressure cell. A preliminary study demonstrates that the uniaxial strain induces a change of the Curie temperature T_C, which depends on the crystal axis where the uniaxial strain applied. It is suggested that these preliminary results seem to be consistent with the Kawamoto’s model (T. Kawamoto, M. Tokumoto, H. Sakamoto, K. Mizoguchi, J. Phys. Soc. Jpn. 70 (2001) 1892.) based on an intermolecular cooperative Jahn–Teller distortion. Further systematic studies will make clear the mechanism of the ferromagnetism.