Spontaneous Magnetic Ordering in the Fullerene Charge-Transfer Salt (TDAE)C60.
作者： A. Lappas , K. Prassides , K. Vavekis , D. Arcon , R. Blinc
DOI: 10.1126/SCIENCE.267.5205.1799
关键词:
摘要: The zero-field muon spin relaxation technique has been used in the direct observation of spontaneous magnetic order below a Curie temperature (T(c)) approximately 16.1 kelvin fullerene charge-transfer salt (tetrakisdimethylaminoethylene)C(60) [(TDAE)C(60)]. Coherent ordering electronic moments leads to local field 68(1) gauss at site 3.2 (parentheses indicate error last digit). Substantial spatially inhomogeneous effects are manifested distribution fields, whose width amounts 48(2) same temperature. evolution internal freezing mirrors that saturation magnetization, closely following behavior expected for collective wave (magnon) excitations. transition ferromagnetic state with T(c) higher than any other organic material is now authenticated.
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